CATEYE USBCU USB Dongle Transceiver User Manual Manual CY300 en
CATEYE Co., Ltd. USB Dongle Transceiver Manual CY300 en
  
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ON5USBCU & 5672A-USBCU User Manual


ENG-1
Continue
Thank you for purchasing the CATEYE Q3a Multi-Sport Computer.
The Q3a is a wristwatch heart rate monitor with additional cyclocomputer features to 
allow athletes to extensively organize and analyze their training data.
2.4 GHz-frequency digital wireless technology, the same technology used for everyday 
equipment such as wireless network is used for both the integrated cadence/speed 
sensor and the heart rate sensor. This technology practically eliminates all interference 
from  external noise  and  cross-talk  with other  wireless  users,  providing  you with 
stress-free riding.
Read this instruction manual thoroughly and understand the functions of the wristwatch 
before using it. Keep this manual in a safe place for future reference.
Important
Always follow the instructions that are marked with “UÊ Warning!!!”.
No part of this manual may be reproduced or transmitted without the prior written UÊ
permission of CatEye Co., Ltd.
The contents and illustrations in this manual are subject to change without notice.UÊ
If you have any questions or concerns about this manual, please contact CatEye UÊ
at www.cateye.com. 
Introduction

ENG-2
Before use
See this section  for installation of the  unit on the bicycle, use  of the heart rate 
sensor, wristwatch set-up, and the basic operation of the product.
Bicycle InstallationUÊ ..........................................See page 10-12
Heart rate sensorUÊ .............................................See page 13
Wristwatch set-upUÊ ...........................................See page 14-21
Basic wristwatch operationUÊ .............................See page 22-23
Clock mode (CLOCK)
See this section to learn how to operate the Clock mode functions.
Alarm clockUÊ .....................................................See page 24
Sports mode (SPORTS)
See this section to learn how to operate the wristwatch functions.
Display data in Sports modeUÊ ...........................See page 28-29
Option mode (OPTION)
See this section to learn how to operate the training functions frequently used in Sports 
mode (countdown and interval functions), and how to set the HR target zone.
Training functionsUÊ ...........................................See page 32-35
Setting the target heart rate zonesUÊ ..................See page 37-38
Data mode (DATA)
See this section to review and manage the recorded files.
Recorded data review (File view)UÊ .....................See page 40-45 “File view”
Download recorded data to PC (PC link)UÊ .........See page 45-47 “PC link”
Setup mode (SETUP)
See this section to change the wristwatch configuration.
Changing the wristwatch configurationUÊ ...........See page 49-60
About the CD-ROM supplied
The CD-ROM supplied contains the following information.
Quick start manual UÊ (PDF file)
Installing the unit on the bicycle and setting up the wristwatch are described 
using video.
Download software “e-Train Data™UÊ  (Windows version)”
This software is used to transfer the measurement data to your personal com-
puter, and then use various functions on the PC, such as a graph display (The 
optional “USB communication kit” is required).
Instruction manual UÊ (PDF file)
This manual can be viewed in PDF file (7 languages).
Use the CD-ROM in combination with this manual.
About the manuals

ENG-3
Continue
Introduction.........................1
About the manuals.................2
Proper use of the CatEye Q3a....5
Important............................6
Description of wristwatch and 
its parts..............................8
Wristwatch.................................8
Accessories................................8
Screen display .....................9
Bicycle Installation .............. 10
Mount the speed sensor and 
magnet.....................................10
Install the wristwatch onto 
the handlebar...........................12
Heart rate sensor ................ 13
Before wearing the heart rate 
sensor......................................13
Wearing the heart rate sensor
...13
Preparing the wristwatch ....... 14
Removing the insulation sheet
...14
Restarting ................................14
Setting the clock/date ..............15
Switching to the Setup mode...16
Tire circumference input..........16
Selecting measurement unit ....18
Switching to the Sports mode
...18
Operation test ..........................19
Formatting/Restarting
operation..................................21
Basic operation of the 
wristwatch ........................ 22
Switching between modes .......22
Backlight..................................23
Power-saving mode.................23
Transmission sleep mode........23
Saving the power of the 
wristwatch ...............................23
Clock mode (CLOCK) ............ 24
Functions in Clock mode..........24
Display data in Clock mode......24
Alarm clock mode....................24
Sports mode (SPORTS) ......... 25
Function in Sports mode..........25
Upper and middle display data
...25
Lower display data...................26
Starting/Stopping
measurement...........................26
Resetting the measurement 
data and saving the files ..........27
Display data in Sports mode....28
Pace function...........................30
Lap function.............................30
Training function......................32
Target heart rate zone ..............35
Option mode (OPTION).......... 36
Function in Option mode..........36
Setting the training function.....36
Setting the target heart rate 
zones .......................................37
Data mode (DATA)............... 39
Function in Data mode.............39
File view...................................40
PC link .....................................45
Past records.............................47
Setup mode (SETUP) ............ 49
Function in Setup mode...........49
Setting the clock/date ..............50
Setting the alarm clock ............51
Setting the tire circumference
...52
Contents
ENG-4
Searching for sensor ID...........53
Setting the measurement unit
...55
Setting the record interval........56
Total trip distance/total 
elapsed time entry....................57
Setting the auto-mode .............58
Setting sound...........................59
Correcting the sea level altitude
...60
Basic knowledge of the 
altitude measurement........... 61
Altitude measurement function
...61
Relation between the altitude 
and atmospheric pressure .......62
Knowledge related to weather 
and altitude ..............................62
Heart rate training ............... 63
Target heart rate zone ..............63
Training for competition ..........66
Use of the target zone..............67
Trouble shooting ................. 68
Trouble on display ...................68
Trouble on operation................70
Water resistance of the 
wristwatch ........................ 71
Before aquatic and outdoor 
activities...................................71
Replacing battery ................ 71
Wristwatch...............................72
Heart rate sensor .....................72
Speed sensor...........................72
Maintenance...................... 73
Spare accessories ............... 73
Flow of the screen ............... 74
Specifications .................... 76
Registration....................... 78
Limited warranty................. 78
Index............................... 79

ENG-5
Continue
Proper use of the CatEye Q3a
Please follow the following instructions for safe usage.
The meaning of icons in this manual:
 Warning!!!: Sections marked with these icons are critical for safe use of the 
device. Be sure to follow these instructions. 
Caution:
Important cautionary notes on the use and operation of the Q3a.
Helpful tips are highlighted with asterisks.*
The meaning of color on the screen in this manual:
Red: Indicates the displayed data is flashing.
Black/gray: Indicates the displayed data is on.
 Warning!!!:
Pace maker users should never use this device.UÊ
Cycling can be a dangerous sport. Always remember to pay attention to the road, UÊ
traffic, and surroundings.
The altitude data of this unit is for reference only. Do not use this unit as an UÊ
instrument for professional purposes.
Do not leave any battery within the reach of children, and dispose of them cor-UÊ
rectly. If a battery is swallowed, consult a doctor immediately.
Caution:
Regularly check the positions of the magnets and the speed/cadence sensors and UÊ
make sure that they are securely mounted. If loose, tighten firmly to avoid falling 
and damage.
Avoid leaving  the  unit  in direct  sunlight  for  extended  periods  of  time. UÊ
A temperature sensor built inside the wristwatch to calculate the altitude may be 
affected from excessive heat, causing inaccurate display of temperature.
Do not disassemble the wristwatch, heart rate sensor, or speed sensor.UÊ
Do not subject the wristwatch, heart rate sensor, or speed sensor to strong impact; UÊ
take care also to prevent any of them from falling.
Do not use paint thinner or rubbing alcohol to clean the unit. Use a damp cloth and UÊ
use mild detergent if necessary.
Stop using the unit if you have skin irritation with the HR strap or electrode pad.UÊ
Do not twist or pull strongly the heart rate sensor.UÊ
The heart rate sensor may deteriorate due to long-term use. Replace the heart rate UÊ
sensor if it has frequent measurement errors.
As a nature of liquid crystal displays, sunglasses with polarized lens may block the UÊ
visibility.

ENG-6
2.4 GHz digital wireless system
2.4 GHz-frequency digital wireless technology, which is the same technology used for 
wireless LAN, is used for both the integrated speed/cadence sensor and the heart rate 
sensor. This technology practically eliminates interference from external noise and 
cross-talk with other wireless computer users, and enables you to store highly reliable 
data.  However, in a  very  rare occasions,  objects  and  places  may  generate strong 
electromagnetic waves and interference, which may result in incorrect measurement.  
The following are potential sources of interference:
Should be especially careful while synchronizing the sensor ID.*
TV, PC, radios, motors/engines, or in cars and trains.UÊ
Railroad crossings and near railway tracks, around television transmitting stations UÊ
and radar bases.
Other wireless computers or digitally controlled lights.UÊ
Altitude measurement
The altitude is determined by detecting the change in atmospheric pressure using a 
pressure sensor built in the wristwatch, which is then converted into elevation. For 
this reason, the measurements may change even at the same location depending on 
the change in atmospheric pressure caused by weather conditions. In addition, note 
that there is a change of about 30 to 40 m  during  the  early  morning  through  the 
evening even in stable weather. This unit may indicate incorrect measurements in the 
following locations and/or environments.
When the atmospheric pressure and/or temperature change(s) significantly due to UÊ
rapid weather change.
In a location where pressure is controlled, such as in an airplane.UÊ
The altitude measurement may change temporarily when the temperature changes UÊ
suddenly, such as in cases of going outside from an indoor room. It will return to 
the normal value after a while.
Important

ENG-7
Continue
Automatic recognition of the speed sensor ID
The speed sensor has its own ID, and the wristwatch measures in synchronization 
with the ID. Two speed sensor IDs can be registered to one wristwatch, which can 
automatically identify the 2 speed sensors once their IDs are registered in advance. 
As a tire circumference is set to the speed sensor ID, wheel selection by manual op-
eration is no longer required, which was necessary with conventional units.
The speed sensor currently recognized is indicated with a sensor icon (*  or  )
on the screen.
Procedure of automatic recognition
When the wristwatch changes to the Clock mode by its power-saving function, and 
then returns to the Sports mode, automatic recognition of the speed sensor ID is 
performed through the following procedure.
The wristwatch searches a sensor signal from the speed sensor ID-1.
1.
When the wristwatch receives a sensor signal from ID-1, it displays sensor icon 
2.
 on the screen, and starts measurement.
When the wristwatch cannot receive any sensor signal from ID-1, it searches a 
sensor signal from ID-2.
When the wristwatch receives a sensor signal from ID-2, it displays sensor icon 
3.
 on the screen, and starts measurement.
When the wristwatch cannot receive any sensor signal from ID-2, it searches a 
sensor signal from ID-1 again.
The wristwatch repeats synchronization through the procedure described above 
even if it fails in synchronization for some reason, such as communication failure; 
in such cases however, it takes time for recognition.
When  the  wristwatch cannot  receive any signal  from  the  speed  sensor in  5 *
minutes, the power-saving mode is activated, and the wristwatch changes to the 
Clock mode.
Switching the ID by manual operation
The speed sensor ID can be forcibly switched by manual operation from “Setting the 
tire circumference” in the Setup mode. Use this operation in the following cases.
When the wristwatch cannot recognize the intended sensor signal, since the 2 UÊ
registered speed sensors are nearby and both are sending a sensor signal.
When you want to switch the speed sensor ID immediately.UÊ
Once  you  switch  the speed  sensor  ID  by  manual  operation,  the wristwatch *
continues to search only the speed sensor ID you switched when returning to 
the Sports mode. When the wristwatch cannot receive any sensor signal in 5 
minutes, the power-saving mode is activated, and the wristwatch changes to the 
Clock mode. The wristwatch searches through the procedure of automatic rec-
ognition when it returns to the Sports mode.

ENG-8
Wristwatch
Description of wristwatch and its parts
Accessories
Bracket
(for handlebar-mount)
Speed sensor 
(SPEED/CADENCE)
Heart rate sensor
HR strap
Wheel magnet
Cadence magnet
Nylon ties (x7)
CD-ROM
Menu/enter button 
(MENU)
Start/stop/
select button (SSS)
Mode-1/+ button * 
(MODE1)
Mode-2/- button * 
(MODE2)
Pressure sensor
Battery cover
Serial number
Belt
Lap button (LAP)
Pressing  and  holding  the * MODE1  or 
MODE2  button  lights  up  the backlight
(Except in Setup mode).
See page 2 for the CD-ROM contents.*
This manual

ENG-9
Continue
Screen display
Icon Description
Sensor icon
Displays the speed sensor currently synchronized.
km/h  mph Speed unit
Flashes while the measurement (counting the elapsed time).
ft  m Altitude unit
Flashes while the measurement (counting the elapsed time).
Alarm clock
Lights up when the alarm clock is on.
Speed/Cadence sensor signal
Indicate Speed/Cadence sensor signal status. (page 23)
Heart rate sensor signal
Indicate Heart rate sensor signal status. (page 23)
Target zone
Lights up when the target zone is on, and flashes when it is out of the zone.
Low battery alarm
Flashes when the battery of the wristwatch needs replacing with a new one.
bpm Heart rate unit
AM  PM AM/PM display (lights up when using the 12-hour system)
LAP Lap indicator
Lights up while the lap data is displayed.
Auto-mode
Lights up when the auto-mode function is on.
%Slope angle, zone, memory point utilization
Alarm
Lights up when the HR alarm sound feature is turned on.
SSS
MODE1
MODE2
Button navigation
Indicates the  buttons  available  while  setting  up 
the wristwatch, or on the Setup screen.
Speed pace arrow (upper display)
The pace arrows show whether the current speed is faster 
() or slower ( ) than the average speed.
Heart rate pace arrow (middle display)
The pace  arrows  show  whether the  current  heart  rate  is 
faster ( ) or slower ( ) than the average heart rate.
Upper data display
Lower data display
Upper selected mode icon
Indicates the measurement data currently displayed in the 
upper data display.
Lower selected mode icon/unit
Indicates the unit along with the data currently displayed in 
the lower data display.

ENG-10
Before use
Bicycle Installation
Mount the speed sensor and magnet
1-1.Lightly secure the speed sensor
Locate the speed sensor on the left (non-drive 
side) chain stay as shown above, and loosely 
secure it with the nylon ties.
Do not tighten the nylon ties completely at *
this stage.  Once a nylon tie is tightened, it 
cannot be pulled out.
1-2.Mount the magnet
Loosen the  set  screws  both on  the 
1.
SPEED side  and  CADENCE  side  of  the 
speed sensor, and turn the sensor to the 
angle as shown on the right.
Temporarily secure the wheel magnet to 
2.
the spoke so that it faces the sensor zone 
on the SPEED side.
Temporarily secure the cadence magnet in-
3.
side the crank with nylon ties, so that it faces 
the sensor zone on the CADENCE side.
Two magnets maybe stuck together inside *
the package, and appear as one magnet.
1
SPEED
CADENCE
SPEED
SPEED
CADENCE
Wheel magnet
Cadence magnet
Speed sensor
Nylon ties
Speed sensor
Left chain stay
1. Pre-Install the 
wheel magnet
3.
Pre-install the 
cadence magnet
Nylon ties
2. Set screw on the SPEED side
3. Set screw on the 
CADENCE side
Sensor zone
Sensor zone

ENG-11
Before use
Continue
When the  speed  sensor  is  not  positioned properly  in  respect  to  the two *
magnets (in both Steps 2 and 3), move the speed sensor back and forth so 
that it is positioned properly. After you move the speed sensor, adjust the 
position so that the two magnets face the relevant sensor zone.
After adjustment, tighten the nylon ties firmly to secure the speed sensor.
4.
1-3.Adjust the distance to the magnet
Adjust the  distance  between  the wheel 
1.
magnet and the SPEED side  of  the  speed 
sensor to be about 3 mm. After adjustment, 
tighten the set screw on the SPEED side.
Adjust the  distance  between  the cadence 
2.
magnet and the CADENCE side of the speed 
sensor to be about 3 mm. After adjustment, 
tighten the set screw on the CADENCE side.
For steel axle pedals, the cadence magnet can *
be installed onto  the end face of  the pedal 
axle. Make sure to remove the double-sided 
tape from the magnet when doing this.
1-4.Securing various parts
Tighten the speed sensor, set screw, and mag-
net firmly, and check for any looseness.
Speed/Cadence sensor nylon ties
Speed and Cadence sensor screws
Wheel magnet screw
Cadence magnet
Wheel
magnet
Cadence magnet
SPEED
CADENCE
About 3 mm
About 3 mm
Cut extra length  of the 
nylon tie with scissors.

ENG-12
Before use
Install the wristwatch onto the handlebar
Install the wristwatch to the handlebar with a bracket.
Check the correct direction of the bracket, and attach it to the handlebar.
1.
Attach the bracket in the correct direction according to the handlebar size, 
and fix it using nylon ties.
Wrap the wristwatch around the bracket.
2.
Firmly fasten the belt so that the wristwatch will not come off.
2
Cut extra length of the 
nylon tie with scissors.
Put the nylon ties through the bracket *
before you attach it to the handlebar.
Standard handlebar
Oversize bar
Nylon ties
Nylon ties Handlebar
Handlebar
Bracket
Bracket
Wristwatch
BeltHandlebar
Front
Front
Front
Front

ENG-13
Before use
Continue
Heart rate is measured when the heart rate sensor is worn on the chest.
Before wearing the heart rate sensor
 Warning!!!:
This product must NOT be used by those who have a pacemaker.
To avoid measurement errors, it is recommended to moisten the electrode pads UÊ
with water.
If your skin is ultra-sensitive, the electrode pad may be moistened with water and UÊ
worn over a thin undershirt.
Chest hair may interfere with the measurement.UÊ
Wearing the heart rate sensor
Insert the HR strap hook to the hole on the heart rate sensor until it clicks.
1.
Wear the heart rate sensor with the HR strap, and adjust the length of the HR strap 
2.
to fit your chest size (under bust). Fastening the strap too tightly may cause dis-
comfort.
Insert the HR strap hook to the other hole on the heart rate sensor
3.  until it clicks.
For removal, hold near the hole on the heart rate sensor and the hook, and twist off.
4.
Ensure that the rubber part of the electrode pad is in direct contact with the body.*
Wearing the heart rate sensor when your skin is dry or on top of your undershirt may produce *
measurement errors. To avoid errors, moisten the rubber part of the electrode pad.
Heart rate sensor
Heart rate sensor
Electrode pad
Hook
Heart rate sensor
HR strap

ENG-14
Before use
Wristwatch's basic items must be set up before using it.
Removing the insulation sheet
When you use the unit for the first time after purchas-
ing, remove the insulation sheet under the battery.
Open the battery cover of the wristwatch 
using a coin, etc.
Turn the inner cover to the open position 
using a coin, remove this, and remove the 
insulation sheet under the battery.
Do not turn the inner cover excessively. *
Otherwise, the tab may be damaged.
Replace the battery, and  turn  the  inner 
cover to the closed position. Check that 
the cut-out  portion  of  the inner  cover 
faces the pin, and the 2 tabs are fixed.
Press the  AC button beside  the  inner 
cover using a tool with a pointed tip.
Check that  an  o-ring  is installed  to  the 
groove on  the  wristwatch,  and firmly 
close the battery cover.
Preparing the wristwatch
Restarting
When using the unit for the first time after purchasing, or after replacing batteries, 
restart the wristwatch to make it work properly.
The wristwatch and each sensor ID have been checked at the factory.*
Simultaneously press and hold the 
1. MENU,SSS,MODE1, and MODE2 buttons 
on the wristwatch for about 4 seconds.
“FACTORY DEFAULT” is displayed.
MODE2
MODE1
SSS
MENU
(Simultaneously press)
When “* FACTORY DEFAULT” is not displayed on the screen, the button op-
eration has not been completed properly. Simultaneously press and hold the 
4 buttons again until the display changes.
2. Select “NO”.
When “NO” is displayed on the screen, confirm with the 
SSS button.
The backlight of the display lights up and a buzzer sounds, 
then the display is switched to the clock/date setting screen.
Proceed to the next set-up item, “Setting the clock/date”.
YES  NO : 
MODE2
MODE1 (or)
Confirm : 
SSS
1
Close
O-ring
AC button
Battery cover
Inner cover
Tab
Pin
Pin
Cut-out portion
CR2430
Open position
Closed position
Insulation sheet
Open
Restarting

ENG-15
Before use
Continue
* Select “YES” by pressing the MODE1 or MODE2 button for 
the formatting operation. As the formatting operation de-
letes all data, select “NO” for the restarting operation. See 
“Formatting/Restarting operation” on  page 21 for differ-
ences between the formatting and restarting operations.
The restarting operation will be cancelled if no button has ben *
pushed for 3 minutes and the wristwatch will enter the Clock screen automatically. 
In this case, press the 4 buttons simultaneously and do the restart operation again.
Setting the clock/date
Set the current time and date.
Press and hold the * MODE1 or MODE2 button to increase/decrease the number quickly.
1. Select the clock display format.
Select “24h (24 hour)” or “12h (12 hour)” pressing the MODE1
or MODE2 buttons, and confirm with the SSS button.
24h  12h : 
MODE2
MODE1 (or)
Confirm : 
SSS
2. Enter the “Hour” and “Minute”.
Enter the “Hour” pressing the MODE1 to increase, and MODE2
button to decrease the flashing value, confirm with the SSS
button, and then enter the “Minute” in the same way.
Edit value : 
MODE2
MODE1 (or)
Confirm : 
SSS
3. Select the date display format.
Select the date display format from YY.MM.DD (Year/
Month/Day), DD.MM.YY (Day/Month/Year) , and 
MM.DD.YY (Month/Day/Year) pressing the MODE1 or 
MODE2 buttons, and confirm with the SSS button.
Switch the display : 
MODE2
MODE1 (or)
Confirm : 
SSS
4. Enter the “Year”, “Month” and “Day”.
Enter the “Year”, “Month” and “Day” in the display order 
selected in Step 3 using the MODE1 to increase, and MODE2
button to decrease the flashing value, and confirm with the 
SSS button. For “Year”, enter the last 2 digits of the year.
Edit value : 
MODE2
MODE1 (or)
Confirm : 
SSS
After you set the clock/date, press the 
5. MENU button to com-
plete the restarting operation, and switch to the Clock mode.
To Clock mode (setup is completed): 
MENU
2
Display format
Formatting
YY/MM/DD
Display format
Hour
Minute

ENG-16
Before use
Switching to the Setup mode
Switch the wristwatch from the Clock mode to the Setup mode, and set the tire 
circumference and the measurement unit.
1. Press and hold the MENU button in the Clock mode to 
display “SETUP MENU” on the screen.
It switches to “CLOCK DATE” automatically.
Switch modes :
MENU
(press & hold)
Unless you  perform an operation  in the Setup mode within 3 minutes, it *
returns to the Clock mode. In such cases, any change is not reflected.
Tire circumference input
In the Setup mode “Setting the tire circumference”, enter the tire circumference 
of the bicycle to   (Sensor 1) in millimeters.
See “Tire circumference” on the next page for reference.*
Press and hold the * MODE1 or MODE2 button to increase/decrease the number 
quickly.
1. Press the MODE1 button twice to switch to “TIRE”, and 
confirm with the SSS button.
Switch screen : 
MODE2
MODE1 (or)
Confirm : 
SSS
2.
When  and “S/ID:1” are flashing, confirm with the SSS button.
Change the tire circumference of Sensor 1.
 :
MODE2
MODE1 (or)
Confirm : 
SSS
3. Enter the last 2 digits of the tire circumference by press-
ing the MODE1 or MODE2 button, and  move  digits  by 
pressing the SSS button.
Then enter the first 2 digits in the same way.
Increase/decrease:
MODE2
MODE1 (or)
Move digits: 
SSS
Pressing the 
4. MENU button confirms the tire circumfer-
ence, and returns to the Setup mode “TIRE”.
Setup is completed: 
MENU
To use *  (Sensor 2), set the tire circumference of Sensor 2 according to 
the Setup mode “Searching for sensor ID” on page 53, after you complete 
“Preparing the wristwatch”.
3
4

ENG-17
Before use
Continue
Tire circumference
You can find the tire circumference (L) of your tire size in the tire circum-
ference reference table below, or actually measure the tire circumference 
(L) of your bicycle.
How to measure the tire circumference (L)
For the most accurate measurement, do a wheel roll out. With the tires under 
proper pressure, place the valve stem at the bottom. Mark the spot on the floor and with the rider's weight 
on the bike, roll exactly one wheel revolution in a straight line (until the valve comes around again to the 
bottom). Mark where the valve stem is and measure the distance on the ground in millimeters.
For your reference, use the tire circumference table below.*
Tire circumference reference table
L mm
ETRTO Tire size L
(mm)
47-203 12 x 1.75 935
54-203 12 x 1.95 940
40-254 14 x 1.50 1020
47-254 14 x 1.75 1055
40-305 16 x 1.50 1185
47-305 16 x 1.75 1195
54-305 16 x 2.00 1245
28-349 16 x 1-1/8 1290
37-349 16 x 1-3/8 1300
32-369 17 x 
1-1/4(369) 1340
40-355 18 x 1.50 1340
47-355 18 x 1.75 1350
32-406 20 x 1.25 1450
35-406 20 x 1.35 1460
40-406 20 x 1.50 1490
47-406 20 x 1.75 1515
50-406 20 x 1.95 1565
28-451 20 x 1-1/8 1545
37-451 20 x 1-3/8 1615
37-501 22 x 1-3/8 1770
40-501 22 x 1-1/2 1785
47-507 24 x 1.75 1890
50-507 24 x 2.00 1925
54-507 24 x 2.125 1965
25-520 24 x 1(520) 1753
24 x 3/4 
Tubular 1785
28-540 24 x 1-1/8 1795
32-540 24 x 1-1/4 1905
25-559 26 x 1(559) 1913
ETRTO Tire size L
(mm)
32-559 26 x 1.25 1950
37-559 26 x 1.40 2005
40-559 26 x 1.50 2010
47-559 26 x 1.75 2023
50-559 26 x 1.95 2050
54-559 26 x 2.10 2068
57-559 26 x 2.125 2070
58-559 26 x 2.35 2083
75-559 26 x 3.00 2170
28-590 26 x 1-1/8 1970
37-590 26 x 1-3/8 2068
37-584 26 x 1-1/2 2100
650C
Tubular
26 x 7/8
1920
20-571 650 x 20C 1938
23-571 650 x 23C 1944
25-571 650 x 25C 
26 x 1(571) 1952
40-590 650 x 38A 2125
40-584 650 x 38B 2105
25-630 27 x 1(630) 2145
28-630 27 x 1-1/8 2155
32-630 27 x 1-1/4 2161
37-630 27 x 1-3/8 2169
18-622 700 x 18C 2070
19-622 700 x 19C 2080
20-622 700 x 20C 2086
23-622 700 x 23C 2096
25-622 700 x 25C 2105
28-622 700 x 28C 2136
ETRTO Tire size L
(mm)
30-622 700 x 30C 2146
32-622 700 x 32C 2155
700C
Tubular 2130
35-622 700 x 35C 2168
38-622 700 x 38C 2180
40-622 700 x 40C 2200
42-622 700 x 42C 2224
44-622 700 x 44C 2235
45-622 700 x 45C 2242
47-622 700 x 47C 2268
54-622 29 x 2.1 2288
60-622 29 x 2.3 2326

ENG-18
Before use
Selecting measurement unit
Select the speed unit and temperature unit.
1. Press the MODE1 button twice to switch to “UNITS”, and 
confirm with the SSS button.
Switch screen : 
MODE2
MODE1 (or)
Confirm : 
SSS
2. Select the speed unit by pressing the MODE1 or MODE2
button, and confirm with the SSS button.
km/h  mph : 
MODE2
MODE1 (or)
Confirm : 
SSS
3. Select the temperature unit by pressing the MODE1 or 
MODE2 button in the same way.
°C  °F : 
MODE2
MODE1 (or)
Pressing the 
4. MENU button  confirms  the  measurement 
unit, and returns to the Setup mode “UNITS”.
Now, the wristwatch setup is completed. Press the MENU
button again to switch to the Clock mode screen.
To the mode top/switch the mode : 
MENU
Switching to the Sports mode
Switch the wristwatch from the Clock mode to the Sports mode for the operation 
test of the speed sensor and heart rate sensor.
1. Press the  MENU button in the  Clock  mode  to display 
“SPORTS MENU” on the screen.
It switches to the measurement screen automatically.
Switch modes :
MENU
5
6
Speed unit
Temperature unit

ENG-19
Before use
Continue
Operation test
It may take up to approximately 2 minutes to display the screen because the *
wristwatch checks the sensor when switching to Sports mode.
If the signal icon *  or   on the measurement screen is turned off, press the 
MODE1 or MODE2 button to turn it on.
Speed sensor (SPEED side)
1. Raise the rear wheel and spin the wheel.
2. When the speed is displayed on the screen, it is oper-
ating normally.
Speed sensor (CADENCE side)
1. Turn the crank.
2. When the  cadence  is  displayed on  the  screen,  it  is 
operating normally.
Heart rate sensor
1. Wear the heart rate sensor (page 13).
2. When the heart rate is displayed on the screen, it is 
operating normally.
*Heart rate sensor can also be activated by rubbing both electrode pads with 
thumbs. This method cannot be used to measure the heart rate accurately, 
but is used as a simple method for testing the sensor/wristwatch commu-
nication and searching for the sensor ID.
7
Electrode pad

ENG-20
Before use
Important: When the speed, cadence, and/or heart rate are/is not displayed, possible 
causes are as follows.
Speed and cadence are not displayed.
Check items Remedy
Is the Speed and Cadence sensor icon on 
 ? If  icon is off, the wristwatch cannot receive any data. Press the 
MODE1 or MODE2 button to cancel the transmission sleep mode 
(page 23).
Check whether  the distance  between the 
speed/cadence sensor and the magnet is 
too large. 
Adjust the position of the speed/cadence sensor and that of the 
magnet correctly. (See “Bicycle Installation” on page 10.)
Is the  sensor  zone of  the  speed/cadence 
sensor aligned the center of the magnet?
Has the power-saving mode been activated, 
entering Clock mode?
Press the MENU button to switch to Sports mode.
The display may be delayed depending on 
the wireless transmission condition.
Check whether any speed signal is received by spinning the wheel 
for a while.
Have you performed the formatting opera-
tion?
The sensor ID synchronized at the factory is initialized by format-
ting. Synchronize the speed sensor ID, according to the Setup 
mode “Searching for sensor ID” (page 53).
Heart rate is not displayed.
Check items Remedy
Is the Heart rate sensor icon on   ? If  icon is off, the wristwatch cannot receive any data. Press 
the MODE1 or MODE2 button to cancel the transmission sleep 
mode (page 23).
Has the power-saving mode been activated, 
entering Clock mode?
Press the MENU button to switch to Sports mode.
Is the heart rate sensor attached securely 
to your body?
Adjust the electrode pad with its  rubber  surface  to have good 
contact with the body.
Dry skin (particularly in winter) Slightly moisten the electrode pad of the heart rate sensor.
Is the  Heart rate  sensor being  worn cor-
rectly?
To wear the electrode pad correctly, follow the instructions for 
wearing the heart rate sensor (page 13).
Have you performed the formatting opera-
tion?
The sensor ID synchronized at the factory is initialized by format-
ting.  Synchronize  the  heart rate sensor  ID, according  to  the 
Setup mode “Searching for sensor ID” (page 53).

ENG-21
Before use
Continue
Formatting/Restarting operation
There are 2 different wristwatch set-up operations; formatting and restarting operations. 
Follow the appropriate one depending on the situation.
Formatting :
When you want to delete all data and the setup of the wristwatch.
Restarting : When you use the unit for the first time after purchasing, or after replac-
ing batteries, or an error is displayed.
In the restarting operation, the following data are retained.*
SPORTS MENU Date
OPTION MENU Setting the target zone
DATA MENU
UÊ ->Ûi`ÊwiÊ`>Ì>
UÊ ,`iÊ`>Ì>
UÊ }Ê`>Ì>
SETUP MENU
UÊ >ÀÊVVÊÃiÌÌ}
UÊ /ÀiÊVÀVÕviÀiViÊ>`Ê
Sensor currently selected
UÊ -iÃÀÊ
UÊ i>ÃÕÀiiÌÊÕÌ
UÊ ,iVÀ`ÊÌiÀÛ>
UÊ ÕÌ`i
UÊ /À>}ÊvÕVÌ
UÊ -Õ`ÊÃiÌÌ}
UÊ -i>ÊiÛiÊ>ÌÌÕ`i
Flows of the formatting and restarting operations 
The formatting and restarting procedures are as follows.
In the case of the formatting operation, you can set the “tire circumference” *
and “measurement unit” sequentially after you set the “clock/date”. Each 
set-up procedure is described on the page referenced. 
After you complete the set-up, be sure to synchronize the sensor ID according 
to the Setup mode “Searching for sensor ID” (page 53).
For restarting:
The date when last executed the restarting *
operation will be initially displayed.
Restarting operation (page 14)
Setting the clock/date (page 15)
Clock mode
For formatting:
Formatting operation (page 14)
Setting the clock/date (page 15)
Selecting measurement unit (page 18)
Tire circumference input (page 16)

MENU
MENU
ENG-22
Before use
Switching between modes
The wristwatch has 4 types of mode functions and the Setup mode. “CLOCK MENU”,
“SPORTS MENU”, “OPTION MENU”, and “DATA MENU” are alternatively selected in 
sequence by pressing the MENU button. Select the screen of your choice to proceed 
to the mode screen automatically.
Basic operation of the wristwatch
Sports mode (page 25)
This  measurement screen  is  used 
as a cyclocomputer and/or heart rate 
monitor.
Option mode (page 36)
This mode is used to edit option setup 
values often used while riding bicycle 
such as zones, and count down.
Data mode (page 39)
This mode is used  to  check  the  data 
saved and/or import them to your PC.
Clock mode (page 24)
Displays  the  clock.  This  mode  is 
used for everyday wristwatch func-
tions displays  also  altitude,  tem-
perature and alarm. 
Press and hold the * MENU button in the Clock mode 
or Sports mode to switch to “SETUP MENU”.
(press & hold)
To the previous mode screen
Setup mode (page 49)
This mode is used to edit 
values and setup for less 
frequently  used  items, 
such as sound and wheel 
circumference.

ENG-23
Before use
Continue
Backlight
Pressing and holding the MODE1 or MODE2 button illuminates 
the display for about 3 seconds (Except in the Setup mode).
Pressing any button while backlight is still on extends the illu-*
mination for another 3 seconds.
Power-saving mode
Transmission sleep mode
When the wristwatch does not receive any data from the speed 
sensor or heart rate sensor for 5 minutes, each sensor will 
enter the transmission sleep status to save battery power. No 
sensor signal can be received in the transmission sleep status. 
To restart measuring, press the MODE1 or MODE2 button to 
recover from  transmission  sleep.  The signal  transmission 
status of each sensor can be checked with the relevant signal 
icon and the numerical value “---” display.
UÊ  (flashing) :
Receiving sensor signal (under operation)
UÊ  (constant) :
Stand-by for sensor signal (searching for sensors)
UÊ  (off) :
Transmission sleep. Displays the symbol “---”.
Transmission sleep is set separately for the speed sensor *
and the  heart  rate  sensor. Accordingly,  if  the  bicycle  is 
stopped for over 5 minutes with the heart rate sensor worn, 
only the speed sensor goes into transmission sleep. When 
resuming the ride, speed/cadence sensor must be re-acti-
vated in order to display necessary data.
When either the speed sensor or the heart rate sensor is in *
transmission sleep, the display remains in the Sports mode; 
however, when both sensors go into transmission sleep, 
the wristwatch switches to the power-saving mode.
Saving the power of the wristwatch
When the wristwatch does not receive any data from both the 
speed and heart rate sensors for 5 minutes, it will switch to 
Clock mode automatically. Press the MENU button to return 
to Sports  mode  and  continue measuring.  For  details,  see 
“Switching between modes” on page 22.
Even if the power-saving mode is activated, data not reset *
are saved in the wristwatch.
MODE2
MODE1 (or)
(press & hold)
Speed sensor 
signal icon
The  speed  sensor 
is in transmission 
sleep. Displays the 
symbol “---”.
The heart rate sen-
sor is in transmis-
sion sleep. Displays 
the symbol “---”.
Clock mode
Heart  rate  sensor 
signal icon

ENG-24
Clock mode
Switching to Clock mode
Select “CLOCK MENU” by pressing the MENU button until display 
swithces to Clock mode.
Clock mode is the default screen, so if the power-saving mode is *
activated in any other mode display will switch to Clock mode. 
For details, see “Power-saving mode” on page 23.
Functions in Clock mode
Displays the current time, date, and day of the week. Press the MODE1 button to display the current sea 
level altitude. Press the MODE2 button to display the current temperature or turn on/off the alarm clock.
Display data in Clock mode
For setting the time and date, see the Setup mode “Setting the clock/date” (page 50).*
Altitude may need to be adjusted to the current location. For details, see “Correcting the sea *
level altitude” on page 60, and “Basic knowledge of altitude measurement” on page 61.
While the current sea level altitude is displayed on the screen, shortcut operation *
(press and hold the MODE1 button for 3 sec) moves to the Setup mode “Correcting 
the sea level altitude” (page 60) for quick altitude correction. This shortcut operation 
however does not work while the measurement is continuing in the Sports mode.
Alarm clock mode 
Indicates with an alarm sound when the current time reaches any 
pre-set time. When it reaches a predetermined time, the wrist-
watch switches  to  Clock  mode, and  sounds  an  alarm  for  20 
seconds regardless of the mode displayed. Press any button on 
the wristwatch to stop the alarm.
Press and hold the * MODE1 button for 3 sec in the Clock mode (except 
when the current sea level altitude is displayed) to turn on/off the alarm 
clock. The icon   appears on the screen when the alarm clock is on.
For setting the alarm clock, see the Setup mode “Setting the *
alarm clock” (page 51).
Clock mode (CLOCK)
Displays the current 
time in the 12- or 
24-hour format.
Displays the cur-
rent date.
Displays the current day of the week. Altitude
Displays the current alti-
tude.
Temperature
Displays  the  current 
temperature.
To altitude cor-
rection  screen 
(page 60)
Alarm clock on/off
(press & hold for 3 sec)
Alarm clock icon
MODE1
MODE2
MODE1
MODE1
Shortcut
(press & hold for 3 sec)
When the measurement 
is stopped

ENG-25
Sports mode
Continue
Switching to Sports mode
Select “SPORTS MENU” by pressing the MENU button until display 
switches to Sports mode.
Function in Sports mode
The Sports mode is for measurement using the cyclocomputer and heart rate monitor 
functions. 4 types of data such as the heart rate, altitude, and slope are displayed on the 
screen. These data can be switched by pressing the MODE1 or MODE2 button. 
The displayed data are as follows.
Measurement is maintained even if switched to another mode.*
Upper and middle display data (Switch using the MODE1 button)
Upper display : Displays data related to the speed and altitude.
Middle display (left) : Displays data related to the heart rate.
Middle display (right): Displays data related to the cadence, temperature and slope 
angle.
*1 When the measurement is stopped in 
the altitude screen, shortcut operation 
(press and hold the MODE1 button for 
3 sec.)  moves  to  the Setup  mode 
“Correcting  the sea  level  altitude” 
(page 60).
Sports mode (SPORTS)
Switch pressing the MODE1 button
Heart rate/Cadence
Current speed
Average  heart  rate/
Average cadence
Heart rate / Slope angle
Ascending altitude
Maximum heart  rate/
Maximum cadence
Heart rate / Temperature
Altitude
Shortcut*1
MODE1
MODE1
MODE1
MODE1
Average speed Maximum speed
MODE1
MODE1
(press & hold 
for 3 sec)
To altitude correction  screen 
(page 60)
When the 
measurement is 
stopped

ENG-26
Sports mode
Lower display data 
(Switch using the MODE2 button)
Displays additional ride data.
*1 The training function screen displays one of the following; countdown distance, 
countdown time, or interval. For details, see “Training function (countdown func-
tion and interval function)” on page 32.
*2
When measurement is stopped in the training function screen, shortcut operation (press and hold 
the MODE2 button for 3 sec.) moves to the Setup mode “Setting the training function” (page 36).
Starting/Stopping measurement
”km/h [mph]” or “m[ft]” icon flashes during speed measurement. 
Initially, the auto-mode function which starts or stops measure-
ment automatically in sync with the bicycle motion is ON. Auto 
measurement is  switched  to  manual  measurement and  vice 
versa by ON/OFF operation in the auto-mode. For details, see the 
Setup mode “Setting the auto-mode” (page 58). The maximum 
speed, maximum heart rate, and maximum cadence are updated 
regardless of starting/stopping the measurement.
To use this unit as a heart rate monitor, start/stop the measure-*
ment using  the  SSS  button  in the  manual  measurement. 
When the auto-mode is on, you cannot start the measurement.
Auto-mode (automatic measurement)
When the auto-mode is on,   appears on the screen. The wristwatch detects the 
wheel spinning, and starts/stops the measurement automatically.
When the transmission is stopped and  Sensor  signal  icons *  and   are  off,  the 
measurement will not start even after the bicycle starts. If a bicycle is stopped for 
more than 5 minutes or if heart rate sensor is either far from the bicycle or off the 
body, it will go into sleep. This normally happens when taking a rest during the ride. 
To recover from the transmission sleep, press the MODE1 or MODE2 button to turn 
on the sensor signal icons. For details, see “Transmission sleep mode” on page 23.
AT icon
Switch pressing the MODE2 button
Elapsed time
Clock
Trip distance
Calorie Consumption
Training function*1
Lap timer
MODE2
MODE2
MODE2
MODE2
MODE2
MODE2
MODE2
Shortcut*2
(press & hold for 3 sec)
To the setting count-down screen 
in Option mode (page 36)
When the 
measurement is 
stopped

ENG-27
Sports mode
Continue
Manual measurement
When the auto-mode is off (  is off), use the SSS button to start/stop the measurement.
Stop reminder
The stop reminder function Reminds the rider with an alarm 
incase the stopwatch is forgotten to be stopped after the ride. 
When any signal is not received from the speed or cadence 
sensor for 90  seconds while counting the elapsed  time, an 
alarm sounds and “STOP” appears on the screen. This alert 
display is repeated up to 3 times every 90 seconds. When any 
sensor signal is detected, the alarm is stopped.
Forgetting to stop the measurement is likely to happen at a rest during a ride or *
after a race finishes. In cases you will start again immediately, such as at traffic 
signals, or when you use this unit as a heart rate monitor, ignore this.
This function cannot be disabled.*
Resetting the measurement data and saving the files
To reset  the measurement data,  interval, and lap  data to 0, 
simultaneously press  the  SSS +  MODE1  or  SSS +  MODE2
buttons on any screen in the Sports mode (except interval on 
the training function screen).
Resetting the measurement data saves the point data, which 
was recorded at the timing set for the record interval, auto-
matically in a file. For viewing and deleting the saved data, see 
the Data mode “File view” (page 40).
The screen will freeze for about 2 seconds after resetting; *
however, all measurements are operating normally.
After you reset, the countdown distance, countdown time, and interval are returned *
to the predetermined value you set.
Cannot reset for 5 seconds after pressing the * LAP button.
The wristwatch has a limited memory capacity. When the data volume exceeds the *
memory capacity, any new data can no longer be saved. For details, see the Data 
mode “File view” (page 40).
Resetting with the interval (* INT) displayed on the training function screen resets the 
measurement data of the interval only. For details, see “Training function (countdown 
function and interval function)” on page 32.
MODE1
SSS
MODE2SSS
(Simultaneously press)
(Simultaneously press)
or
Stop reminder

ENG-28
Sports mode
Display data in Sports mode (upper and middle display)
Switch pressing the MODE1 button
Current speed Displays the current speed in real time. Updates 
every second.
Heart rate Displays the current  heart  rate  in  real time. 
Updates every second.
Cadence
Displays the current number of pedal rotations 
per minute. Updated every second.
Average speed*1 Displays the average  speed  since  the  start  of 
measurement.
Average heart rate
*1*2
Displays the average heart rate since the start of 
measurement.  The  time with  no  heart  rate 
measured is not reflected on the average rate.
Average cadence
*1*3
Displays the average cadence since the start of 
measurement. Any time with no pedaling is not 
reflected on the average cadence.
Maximum speed*4
Displays the maximum speed since the start of 
measurement.
Maximum heart rate
*4
Displays the maximum heart rate since the start 
of measurement.
Maximum cadence
*4
Displays the maximum cadence since the start of 
measurement.
Sea Level Altitude Displays the sea level altitude at the current loca-
tion point.
Temperature Displays the current temperature.
Ascending altitude
Displays the accumulated altitude from the point 
you reset to the current point.
* Any descending altitude is not counted.
Slope angle*6 Displays a ±value  on  the  basis that the  slope 
angle of 45° is 100%.
*1 Each average value is displayed on the screen replaced with the character “E” when the elapsed 
time (TM) exceeds 100 hours. Clear the data by resetting (page 27). The average speed is displayed 
in the same way as above when the trip distance exceeds 10000 km [mile].
*2 This device stops calculating the average when the heart rate sensor is detached, and resumes 
the calculation when the heart rate sensor is worn again. This feature produces actual averages 
with the heart rate sensor worn.
*3
This device  calculates the average excluding the time when  you stop  pedaling. This feature pro-
duces actual averages, unlike other models that calculate averages also to include any zero values.
MODE1
MODE1
(press & hold for 3 sec) (When the measurement is stopped)
Shortcut*5

ENG-29
Sports mode
Continue
Display data in Sports mode (lower display)
Switch pressing the MODE2 button
TM
Elapsed time
Displays the elapsed time from the start of measure-
ment to the 1/10 second. When it exceeds 99:59’59”, 
it repeats from 00’00”0.
DST
Trip distance
Displays the trip distance from the start of measure-
ment.
Training function (page 32)
Displays any one selected from the 
countdown distance, countdown time, 
and interval.
C.D. DST
Countdown
distance
Counts  down  the  predetermined  distance,  and 
displays the remaining distance.
C.D. TM
Countdown time
Counts down the predetermined time, and displays 
the remaining time.
INT
Interval 
(interval time/
recovery time)
Counts down the predetermined time (interval time), 
and then counts up automatically as a recovery time 
after the time is up. 
Pressing the LAP button  starts the  interval  time 
again, which allows you to repeat a high and low 
intensity exercise.
LAP
Lap timer
Displays the elapsed time from the previous point (for 
LAP 01: from the start of measurement) in real time.
CAL
Calorie
Consumption
Displays the  estimated calorie consumption  from 
the start of measurement based on the heart rate.
Clock
Displays the current time of day in the 24- or 12-hour 
system.
*4 Each maximum value is updated regardless of starting or stopping the measurement.
*5 When the measurement is stopped, take a shortcut (press and hold the MODE1 button for 3 sec.) 
to the Setup mode “Correcting the sea level altitude” (page 60).
*6 The slope angle value is updated every 2 seconds calculated from several changes of altitude 
and the trip distance. This may cause some delays in an update. Temporarily abnormal values 
may also be displayed because of rapid changes of speed or running at a low speed.
*7 When the measurement is stopped, take a shortcut (press and hold the MODE2 button for 3 sec.) 
to the Setup mode “Setting the training function” (page 36).
or
or
MODE2
Shortcut*7
(press & hold for 3 sec)
MODE2
(When  the  measure-
ment is stopped)

ENG-30
Sports mode
Pace function
2 types of pace arrows, for speed and heart rate, are displayed in 
Sports mode. The arrow icons indicate whether the current speed/
heart rate is above or below the average speed/heart rate.
    :
The current value is above the average.
    :
The current value is below the average.
   :
The current value is equal to the average.
No arrows :
The current value is “0”.
Lap function
Pressing the LAP button during measurement in Sports mode records the measurement 
data between a given set of points (average lap speed/maximum lap speed, average 
lap heart rate/maximum lap heart rate, lap time/split time) up to 99 points*. Immedi-
ately after recording, the lap data is displayed in the order as shown in the figure below, 
and then the display returns to the previous screen.
The maximum number of lap records may decrease depending on file utilization. *
For details, see “Wristwatch memory capacity limit” on page 40.
Average lap speed Displays the average lap speed/heart rate from the previous 
point (for LAP 01: from the start of measurement) to the 
current point.
Average lap heart rate
Lap number
Displays the lap number just recorded.
*When the  total  number  of laps  exceeds  99  points,  “--”
appears indicating further lap recording cannot be done.
Lap time Displays the elapsed time from the previous point (for LAP
01: from the start of measurement).
Split time
Displays the total elapsed time from the start of measurement.
Maximum lap speed Displays the maximum lap speed/heart rate from the previ-
ous point (for LAP 01: from the start of measurement) to 
the current point.
Maximum lap heart rate
Any screen in 
Sports mode
Previous 
screen
Lap data
Current speed
Heart rate
LAP
2.5 sec. 2.5 sec.
Average lap speed Maximum lap speed
Average lap heart rate Maximum lap heart rate
Lap time Split time
Lap number

MODE2
ENG-31
Sports mode
Continue
Press the * MODE2 button with the real time lap data to return to the previous 
Sports mode screen.
Lap time and split time
The lap time displays elapsed time from the last 
press of the LAP button. The split time displays 
the elapsed time from the start of measurement to 
the point LAP button is pressed.
The measured lap data is saved to a file when *
you perform a reset operation (page 27).
Pressing the * LAP button while the total number of 
laps reaches 99 points displays the lap data, but 
“--” appears in place of the lap number indicating further recording is impossible.
The lap data can be reviewed in the Data mode “File view”(page 40).*
Real time lap data
Pressing and holding the LAP button on any screen in Sports mode displays the 
real time lap data in the upper and middle displays. For the real time lap data, the 
unit starts/stops the measurement in sync with the primary measurement; how-
ever, it resets and restarts the data every time you press the LAP button. This in-
dependent feature of lap time can be useful also for pace checks in a lap and sec-
tional trials such as hill climb section.
TM
Start of 
measurement
Lap time 1
Split time 1
Split time 2
Lap time 2
LAP LAP
Previous screen
Real time lap data
Average lap speed Maximum
lap speed
Average lap heart rate
(press & 
hold)
Maximum lap heart rate
Lap timer *
Average lap 
cadence
Lap distance
Maximum
lap cadence
Any screen in 
Sports mode
LAP
MODE1
MODE1

ENG-32
Sports mode
Training function (countdown function and interval function)
This unit  has a countdown function that counts down the  predetermined time and 
indicates when the time is up by setting the target trip distance and elapsed time, and 
an interval function that is used to set the interval time for a given training. The train-
ing function includes both these 2 functions.
Either the countdown function or interval function is displayed in the lower display. For display *
of the training function, see “Display data in Sports mode (lower display)” on page 29.
Select the training function and enter the respective setting values in “Setting the *
training function” (page 36) in Option mode. Display Option mode in the MENU screen 
or shortcut (press and hold MODE2) to the training function setting screen.
Countdown distance
Displays the countdown distance to a predetermined target trip dis-
tance. When it reaches the target trip distance, the unit switches the 
lower display to the countdown data in any Sports mode display, and 
notifies by flashing the numerical value/icon and an alarm sound.
Resetting returns the numerical value to the predetermined *
value you set.
Example of how the countdown distance is used:
Entering the race event distance
1.
For distance system events such as a road race and cen-
tury ride, enter the race event distance before the start, and 
develop your strategy and pace based on the countdown 
distance during the race.
Entering the destination sign distance
2.
For touring, enter the sign distance whenever you encounter a destination sign 
along the road, and develop your pace based on the countdown distance.
Entering the periodical target distance
3.
Enter the periodical target distance for a week, month, or year to check your progress.
Countdown time
Displays the countdown time to a predetermined target elapsed 
time.  When  it  reaches  the  target  elapsed  time,  the  unit 
switches the lower display to the countdown data in any Sports 
mode display, and  notifies by flashing the numerical value/
icon and an alarm sound.
Resetting returns the numerical value to the predetermined *
value you set.
Example how the countdown time is used:
Entering a timed race
1.
For a time endurance race, enter the limit time, and check 
your pace based on the countdown time.
When the target trip 
distance is 20 km
When reached 
(displays for 5 
seconds)
Beep
When the target 
elapsed time is 1 hour
When reached
(displays for 5 
seconds)
Beep

ENG-33
Sports mode
Continue
Setting the return time limit
2.
Enter the half way time when the ride time is limited, and 
enjoy your ride without minding the time.
Target time for a Century ride
3.
Enter the target time for big events such as Century ride and Granfondo, and 
check your pace.
Interval (interval time/recovery time)
Use this function in the interval training.*
The interval training is a training method that combines the interval time (high inten-
sity exercise time) and the recovery time (rest time). With this unit, the recovery time 
is not set for the purpose of simplifying the setup. The recovery time is to be judged 
by users based on the count-up display of the wristwatch. Judging the recovery time 
by users enables flexible training menus, in which the recovery time in every repeat 
is different from the recovery time between the sets (such training that has the re-
covery time of 3 minutes in every repeat, and 10 minutes between the sets).
You can check recovery progress while riding by viewing the screen.*
Depending on the course condition as signals or traffics, you might not start the *
interval along with the pre-set recovery time. In this case, you can take a training 
with smoothness by timing the start on yourself.
Beep
Beep
*1 Interval time: Starts countdown from the pre-set time to zero. At zero, switches 
to recovery time.
*2
Recovery time: No need to pre-set the recovery time. The wristwatch remains in the 
recovery period until LAP button is pressed. Press the LAP button at any timing to 
restart the next interval.
SSS INT
SSS REC
LAP
INT
REC
REC
Interval 
measure-
ment start Interval 
restart
Interval  mea-
surement finish
An image of interval measurement
*1
*1
*2

ENG-34
Sports mode
How to use the interval:
During the interval  training, use the interval display to avoid  confusing the *
start/stop operation with the reset operation.
Setting the interval.
1.
Switch to Sports mode by selecting the interval from the Option 
mode “Setting the training function”.
2. Press the MODE2 until “INT” icon displayed in the lower display.
Switch the lower screen : 
MODE2
3. Press the  SSS  button to  start  the  count down  interval 
measurement. Start a high intensity exercise.
The interval time countdown is displayed.
Interval measurement start : 
SSS
Use the * SSS button to start/stop the interval even when the auto-mode is 
on (  lights  up).  To  start  the interval  measurement,  press  the  SSS
button with the interval displayed in the lower display. Pressing the SSS
button with the interval displayed does not affect start/stop of the measure-
ment in the wristwatch. However, the elapsed time measurement in the wristwatch will start just 
as the interval starts, when the auto-mode is off (  lights off) and measurement is stopped.
When the interval counts down to zero, it will automatically change to recovery 
4.
timer, which counts up until next interval is ready.
When the  interval  time  reaches the  predetermined  time,  an  alarm  sounds, 
various average values and maximum values are displayed in the order as shown 
in the figure below, and then the recovery time starts countup. At this point, the 
wristwatch records the lap data automatically. Measure for any period of time 
in the recovery time, while relaxing and recovering from fatigue.
Average speed Maximum speed Current speed
Average 
heart rate
Maximum 
heart rate
Heart rate
Interval time 
finish
Number of intervals Trip distance in the interval
Recovery time 
(count-up)
Average 
cadence
Maximum
cadence Cadence
2.5 sec. 2.5 sec.
Current speed
Heart rate
Cadence
Interval time
Interval  time 
(countdown)
Beep

ENG-35
Sports mode
Continue
Press the 
5. LAP button to start the next repeat of the interval time again. 
Start pedaling at your interval intensity.
Repeat the steps 4 and 5.
Interval restart : 
LAP
When “
6. INT” or “REC” is displayed in the lower display, pressing the SSS button 
stops the interval measurement.
Interval measurement stop : 
SSS
To restart the interval measurement, press the * SSS button.
Resetting with the interval displayed resets the interval measurement data only.*
The lap data is recorded automatically when the interval measurement starts and *
the interval time is up. When interval measurement is inserted during primary 
measurement, the lap data is recorded as being continued, like regular lap data.
During the interval measurement, pressing the * LAP button skips the interval time 
being counted-down, and starts a new countdown.
The interval time stops just as the elapsed time stops in the wristwatch.*
Target heart rate zone
During measurement, the icon “   ” is displayed, which indicates 
the target heart rate status.
 (constant) : The target zone is set to any of HR.ZONE:1 to 5.
 (flashing)  :
The current heart rate is out of the selected zone.
 (off) : The target zone is set to off.
For selecting the zone and setting the zone range, see the Option *
mode “Setting the target heart rate zones” (page 37).
Target  heart  rate 
zone

ENG-36
Option mode
Switching to Option mode
Select “OPTION  MENU”  by  pressing  the  MENU  button  until  it 
switches to Option mode.
Function in Option mode
Option mode is used to change the settings of the training function, which is used 
most frequently in  Sports mode, and the  target heart rate zone. Switch  to various 
settings as follows.
Setting the training function CD.TIMER
This function is used to select the training function displayed in the lower of the screen, 
and enter the settings.
Stop the measurement before you change the settings.*
In case of shortcutting from Sports mode, proceed to step 2, skipping step 1.*
Press and hold only the * MODE1 button to increase the number quickly.
1. When any other mode screen is displayed, switch to the Option 
mode “CD.TIMER”.
Select “OPTION MENU” by pressing the MENU button sev-
eral times  to  switch  to “CD.TIMER”  automatically.  Then, 
confirm it pressing the SSS button.
Switch the mode : 
MENU
Confirm : 
SSS
Option mode (OPTION)
Setting the training function (countdown/interval)
This function is used to select the countdown or interval, and 
enter the settings.
Setting the target heart rate zones (page 37)
Select the target heart rate zone, and enter the upper and lower 
limits.
MODE2
MODE1 (or)
Target distance or time currently set
Heart rate zone currently set
Training function currently selected
DST : Countdown distance
TIME : Countdown time
INT : Interval timer

ENG-37
Option mode
Continue
2.
Select the training function displayed in the lower of the screen.
Select the “DST  (countdown distance)”, “TIME (countdown 
time)”, or “INT (interval timer)” pressing the MODE1 or MODE2
button, and then confirm it pressing the SSS button.
Select the training function : 
MODE2
MODE1 (or)
(DSTTIME INT)
Confirm : 
SSS
3. Enter the setting.
Enter the target value for the function selected in step 2, each digit one 
by one. Change the value pressing the MODE1 to increase and MODE2
button to decrease the value, and move digits pressing the SSS button.
Increase/decrease : 
MODE2
MODE1 (or)
Confirm : 
SSS
Press and hold the * MODE2 button for 3 seconds to confirm 
the changes, and shortcut to the previous Sports mode.
Pressing the 
4. MENU button confirms the change, and returns 
to Option mode “CD.TIMER”.
To switch to other mode, press the MENU button several times 
to display the screen of your choice.
To the mode top/switch the mode : 
MENU
The settings are reflected in the lower display in Sports mode. For details, see “Train-*
ing function (countdown function and interval function)” on page 32.
Setting the target heart rate zones HR ZONE
Select the registered target heart rate zone (1 to 5) or OFF, change the upper/lower 
limit of each zone, or set on/off of the zone sound.
Stop measurement and perform the resetting operation (page 27) before you change *
the target heart rate zone. If you do not perform the resetting operation, “DATA RESET”
appears on the screen and you cannot change the target heart rate zones.
For details of the target zone, see “Use of the target zone” (page 67).*
The time in the zone measured can be viewed by file in the Data mode “File view” (page 40).*
Press and  hold  the * MODE1  or  MODE2 button to  increase/decrease  the  number 
quickly.
1. When any other mode screen is displayed, switch to the Option 
mode “CD.TIMER”.
Select “OPTION MENU” by pressing the MENU button sev-
eral times to switch to “CD.TIMER” automatically.
Switch the mode : 
MENU
Target distance 
or time
Countdown function 
currently selected
Shortcut from the Sports mode

ENG-38
Option mode
2. Switch to “HR ZONE” pressing the MODE1 or MODE2 button, 
then confirm it pressing the SSS button.
Switch the screen : 
MODE2
MODE1 (or)
Confirm : 
SSS
The target heart rate zone (* ZONE-1 to 5) or “OFF” currently 
selected appears on the screen.
3. Select the target heart rate zone.
Select one of “OFF”, “ZONE-1”, “2”, “3”, “4” or “5” pressing 
the MODE1 or MODE2 buttons. To set the target heart rate 
zone, select from “1” to “5” and confirm it pressing the SSS
button, and then proceed to the step 4. Otherwise, select “OFF”
and proceed to step 6.
Select the zone: 
MODE2
MODE1 (or)
Confirm : 
SSS
4. Enter the lower limit of the zone currently selected pressing 
the MODE1 and MODE2 buttons, and confirm it pressing the 
SSS button.
Then, enter the upper limit in the same way, and confirm it 
pressing the SSS button.
Increase/decrease : 
MODE2
MODE1 (or)
Confirm : 
SSS
You can enter any upper/lower limit to each zone; however, *
the upper limit is adjusted automatically to the lower limit 
+ 1 when the entered lower limit exceeds the upper limit. In 
case of the  upper limit, vice versa,  the lower limit is  ad-
justed in the same way.
It is no problem even if the  upper  and  lower  limit  range *
overlaps other zones.
5. Select “ON” or “OFF” of the alarm sound pressing the MODE1
and MODE2 buttons, and confirm it pressing the SSS button.
ON  OFF : 
MODE2
MODE1 (or)
Confirm : 
SSS
When the alarm sound is on, an alarm sounds continuously *
as long as the heart rate is outside the target heart rate zone.
Pressing the 
6. MENU button confirms the change, and returns 
to Option mode “HR ZONE”.
Press the MENU button repeatedly to switch to another mode.
To the mode top/switch the mode : 
MENU
Upper limit
Lower limit
Setting the HR 
alarm zone
Heart  rate  zone 
currently selected

MODE1
MODE2
ENG-39
Data mode
Continue
Switching Data mode
Select “DATA  MENU”  by  pressing the MENU  button  until it 
switches to Data mode.
Function in Data mode
The Data mode is used to review and delete the saved files, download the measurement 
data to your PC, and review past records.
Data mode (DATA)
Memory point utilization
Number of total laps in all files
Number of total files saved
File view (page 40)
This view is used to review and manage the various 
data recorded.
PC link (page 45)
This is used to send the measurement data to your PC.
The optional “USB communication kit” is required.*
Past records (page 47)
Past trip distance and elapsed time can be reviewed 
by time period.

ENG-40
Data mode
File view FILE
The lap and measurement data are saved into a file automatically each time a ride is 
reset (Resetting operation on page 27). With the file view, you can review and delete 
the files saved.
Saving and managing the files
The wristwatch can record up to 30 files. 
A new file is always saved as F01. When the file volume exceeds the wristwatch 
memory capacity, the oldest file is deleted automatically.
F01
F02
F03
F30
Wristwatch memory capacity limit
Data can be saved within the following memory capacity limits.
Number of files 30 files
Number of laps Laps shall be 99 or less. (* See “Lap data”)
Memory for each recording interval Points shall be 36000 or less.
Example At 2 seconds Maximum record of 20 hours
At 3 seconds Maximum record of 30 hours
At 5 seconds Maximum record of 50 hours
At 10 seconds Maximum record of 100 hours
Measurement data to be saved in a file
Date and time of file creation (date/time when the measurement started)UÊ
Trip distanceUÊ
Elapsed timeUÊ
Various average values (speed/heart rate/cadence)UÊ
Various maximum values (speed/heart rate/cadence/altitude/temperature/UÊ
slope angle)
Various minimum values (altitude/temperature)UÊ
Ascending altitudeUÊ
Calorie consumptionUÊ
Number of laps usedUÊ
Time distribution to the target zone (time in/above/below the zone) and the UÊ
percentages (%)
Lap data (average lap speed, average lap heart rate, maximum lap speed, UÊ
maximum lap heart rate, lap time, split time, trip lap distance)
Point data at the intervals specified.UÊ
Old
Date of creation : New

ENG-41
Data mode
Continue
Lap dataUÊ
One lap per file  is  used  even  when there is no lap data.  Therefore,  the  total 
number of laps is the sum of the total number of laps in all files and the number 
of files.
Example) When the following number of laps are recorded in the files:
Number of laps in a file Number of files
F01 : 5 laps
3 files
F02 : 0 lap
F03 : 10 laps
The total number of laps is the sum of the total number of laps in all files 
“15”, and the total number of files “3”, i.e., “18”.
UÊ Memory point
This unit has a function to automatically record the data at intervals specified 
during measurement (memory point). The recorded data are saved in a file 
together with other measurement records and lap data.
The memory point can be viewed in “memory point utilization” on the File 
view. To use such data, you have to send them to your PC (page 46). 
The automatic record interval can be selected from 4 options in the range of 2 
to 10 seconds according to your application. For details, see the Setup mode 
“Setting the record interval” (page 56).
When the memory point utilization is over 90%, and the 
remaining memory capacity is low:
An alarm sounds during the measurement, “MEMORY”
flashes on the screen. This alert is displayed repeatedly 
every 2 minutes until the data volume exceeds the memory 
capacity.
When the memory point utilization reaches 100%, and the 
data volume exceeds the memory capacity:
An alarm sounds during the measurement, “MEMORY FULL”
flashes on the screen. In this case, the wristwatch automati-
cally saves the data being measured, and creates a file.
Data will be displayed on the screen but now can no longer 
be saved. The alert is displayed repeatedly every 2 minutes. 
It is recommended to stop the measurement immediately, 
and delete the files in the wristwatch.
When using the optional “USB communication kit”, delete the files after you *
send the saved files to your PC.

ENG-42
Data mode
Viewing the contents in a file
View the measurement data in a file saved in the wristwatch.
1. Switch to the Data  mode  “FILE”,  when any other mode 
screen is displayed.
Select “DATA MENU” by pressing the MENU button sev-
eral times to switch to “FILE” automatically. Then, confirm 
it pressing the SSS button.
Switch the mode : 
MODE2
MODE1 (or)
Confirm : 
SSS
2. Select the file number you want to view.
Select  the  file  number  pressing the  MODE1 or  MODE2
button, and confirm it pressing the SSS button.
Switching the file number : 
MODE2
MODE1 (or)
Confirm : 
SSS
The file number starts with the latest file (* F01).
Scroll through the data saved in each file by pressing the 
3.
SSS button.
The display items are as follows on the next page.
Pressing the 
4. MENU button returns to the Data mode “FILE”.
Press the MENU button repeatedly to switch to another mode.
To the mode top/switch the mode : 
MENU
When the target heart rate zone is set to OFF during measurement, no data re-*
lated to the target heart rate zone saved is displayed.
Pressing the * LAP button while viewing data switches to viewing the lap data. For 
details, see “Viewing the lap data” (page 44).
File number
Number of 
laps in a file
Date of file creation
Time of the start
(Displayed 
alternately)
Memory point 
utilization
Number of total 
laps in all files
Number of total 
files saved

ENG-43
Data mode
Continue
Flow of file view
SSS
SSS
SSS
SSS
SSS
SSS
SSS
SSS
Trip time  
(hour/minute/second)
Trip distance  
(km [mile])
Average speed
Average heart rate
Average cadence
Calorie consumption
(kcal)
Maximum speed
Maximum heart rate
Maximum cadence
Time above the zone, 
and the percentage *1
Time below the zone, 
and the percentage *1
Heart rate zone number
Upper zone limit
Lower zone 
limit Time in zone, and percentage *1
Maximum altitude Minimum altitude
Maximum
temperature
Minimum
temperature
Ascending altitude
Maximum  slope 
angle
Data mode “FILE”
(Displayed 
alternately)
(Displayed 
alternately)
(Displayed 
alternately)
(Displayed 
alternately)
*1: The zone percentage is displayed as 
a guide only, and the total percentage 
of 3 zones does not come to 100%.
MODE2SSS
MODE1
SSS
SSS
Delete file view screen
(or)
Return
Delete all files
(to the top screen 
of the File view) 
MENU

ENG-44
Data mode
Viewing the lap data
View the lap data in a file saved in the wristwatch.
1. Select the file number you want to view from the Data mode 
“FILE” (page 42).
Select  the  file  number  pressing the  MODE1 or  MODE2
button, and confirm it pressing the SSS button.
Switching the file number :
MODE2
MODE1 (or)
Confirm : 
SSS
The file number starts with the latest file (* F01).
Press the 
2. LAP button to view the lap data contained in the 
file selected.
Switch the average value to maximum value display press-
ing the SSS button. Press the LAP button again to return 
from the lap data.
Viewing/exiting lap data : 
LAP
When no  lap data is contained in  the file, it cannot be *
viewed.
Switch  the  laps,  if  applicable,  pressing  the 
3. MODE1  and 
MODE2 buttons.
Switching the lap number : 
MODE2
MODE1 (or)
Pressing the 
4. MENU button returns to the Data mode “FILE”.
Press the MENU button repeatedly to switch to another mode.
To the mode top/switch the mode : 
MENU
SSS
Average values Maximum values
Lap number
Lap time Trip lap distance
Average lap 
heart rate Maximum lap 
heart rate
Average lap speed Maximum lap 
speed
Split time
File number
Date of file creation
Time of start
(Displayed
alternately)
(Displayed alternately)
Number of 
laps in a file

ENG-45
Data mode
Continue
Deleting files
You can manually delete the files saved in the wristwatch.
When the data volume exceeds the memory capacity, the wristwatch automatically deletes 
the oldest file, and creates a new file. You can manually delete all files at once.
Before deleting files, perform the resetting operation (page 27) in the Sports *
mode to save all measurement data.
Unless you perform the resetting operation, you can not delete files.
“DATA RESET” appears on the screen for 5 seconds, and then the display 
returns to the File View screen.
Switch to the Data mode “
1. FILE” (page 42), and confirm 
with the SSS button.
2. Simultaneously press the SSS button and the MODE1 or 
MODE2 button to switch to the delete screen.
Switch to Delete: 
MODE1
SSS
 (or) 
MODE2SSS
Pressing the 
3. SSS button deletes all files, and returns to the 
Data mode “FILE”.
Press the MENU button repeatedly to switch to another mode.
Delete all files : 
SSS
Cancel deleting files : 
MENU
To the mode top/switch the mode : 
MENU
Pressing the * MENU button on the delete screen cancels deleting files, and returns 
to the previous screen.
When the wristwatch has no files (* F00) the delete file operation is not operable. 
Once any file is deleted, all lap data contained in the file are also deleted.*
Once a file is deleted, it cannot be restored.*
PC link PC LINK
The PC link is  used  for two-way communication with your  PC  to  which download 
software “e-Train Data™ ver.4” is installed. You can send the data measured with this 
unit to your PC, and change various settings in the wristwatch from your PC.
The optional “USB communication kit” and installation of the “e-Train Data™ ver.4 (Win-
dows version)” contained in the CD-ROM supplied are required to use this function.
For using the files sent, refer to the e-Train Data™ ver.4 instruction manual contained *
in the CD-ROM supplied.
Delete file view 
screen

ENG-46
Data mode
Communication between your PC and this unit 
Send the files saved in the wristwatch to your PC, or reflect the settings changed 
from your PC in the wristwatch.
1. Boot your PC, and connect the USB communication unit 
to the your PC.
Start e-Train Data™ ver.4, and click the “
2. Communication”
button on your PC screen.
Prepare for sending the data according to the instructions 
displayed on your PC screen.
3. Switch to the Data  mode  “FILE”, when any other mode 
screen is displayed.
Select “DATA MENU” by pressing the MENU button repeat-
edly to switch to “FILE” automatically. 
Switch modes : 
MENU
4. Switch to “PC LINK” pressing the MODE1 or MODE2 but-
ton, and then press the SSS button.
“LINK-TO PC” appears on the screen, and the wristwatch 
automatically starts searching for your PC. Once the com-
munication is established, it switches to “SEND FILE”, and 
starts sending the data.
Switch the screen : 
MODE2
MODE1 (or)
Search PC / Send the data :
SSS
When communication with your PC cannot be established, *
“LINK-TO PC FAIL” appears. Press the SSS button to return 
to “PC LINK”, and check the condition of your PC. Pressing 
the SSS button again restarts searching for your PC.
Pressing the * MENU button while sending the data displays 
“LINK-TO PC FAIL”, and stops sending the data. Pressing 
the SSS button returns to “PC LINK”.
Depending on the number of files saved, it takes up to 5 *
minutes to send the data.
Searching for 
your PC
SSS
USB communication unit
Sending data

ENG-47
Data mode
Continue
5. Once sending data  is completed, “SEND FILE END”  ap-
pears. Press the SSS button and return to the data mode 
“PC LINK”.
To the mode top : 
SSS
Press the 
6. MENU button repeatedly to switch to  another 
mode.
To switch modes : 
MENU
Data to be sent from this unit to your PC
The data to be sent to your PC are as follows.
File numberUÊ
Date/time of file creation (date/time when the measurement started)UÊ
Measured values of the speed, heart rate, cadence, trip distance, elapsed time, UÊ
and sea level altitude, at the record intervals specified
Lap data (lap number, average lap speed, average lap heart rate, Average lap UÊ
cadence, maximum lap speed, maximum lap heart rate, maximum lap cadence, 
lap time, split time, and lap distance), Time in the heart rate zone (over / within 
the range / under)
The wristwatch has a limited memory capacity. It is recommended to transfer *
the measurement data periodically to your PC, and delete the files in the wrist-
watch (page 45).
Settings to be changed from your PC
The date, clock, on/off and time of the alarm, tire circumference, speed unit, record 
interval, total trip distance/total elapsed time, auto-mode setting, sound setting, 
and sea level altitude HOME setting.
Past records VIEW LOG
The past records allow you to view the trip distance and elapsed time by time period, 
which are essential for your training management.
Total trip distance (UÊ ODO) and total elapsed time (TTM) since beginning use of this unit
Weekly trip distance and time since MondayUÊ
Monthly trip distance and time since the 1stUÊ
Yearly trip distance and time since January 1stUÊ
You can adjust effectively the  training  menu  by  receiving and analyzing the actual 
training volume of each period of time.
Completion of 
sending

ENG-48
Data mode
1. Switch to the Data mode “FILE”, when any other mode screen 
is displayed.
Select “DATA MENU” by pressing the MENU button several 
times to switch to “FILE” automatically.
Switch modes : 
MENU
2. Switch to “VIEW LOG” pressing the MODE1 or MODE2 but-
tons, and confirm pressing the SSS button.
Switch the screen :
MODE2
MODE1 (or)
Confirm:
SSS
The total trip distance and total elapsed time since first use of 
3.
the wristwatch are displayed.
The weekly, monthly, and yearly trip distance and elapsed time 
are displayed in sequence by pressing the SSS button.
Press the 
4. MENU button repeatedly to switch to another mode.
To the mode top/switch the mode : 
MENU
Once you change any date in the past according to the Setup mode “Setting the clock/*
date” (page 50), some integrated values for the year, month, or week are deleted ac-
cording to the relevant changes.
Total elapsed 
time and total 
trip distance
Elapsed time 
and trip distance 
for the week
Elapsed time 
and trip distance 
for the month
Elapsed time 
and trip distance 
for the year
When the year is changed
Retained Deleted Deleted Deleted
When the month is changed
Retained Deleted Deleted Retained
When the day is changed Retained Deleted Retained Retained
The trip distance of “Past records” in the data mode is integrated regardless of start-*
ing or stopping of the measurement. Therefore, the trip distance may differ from that 
in the sports mode which is interlocked with the start/stop of the measurement.
The measurement time is integrated into the elapsed time.*
Once “* MEMORY FULL” appears on the screen, the elapsed time is no longer added. 
It will resume when the wristwatch attains an available capacity.
Total trip distance Weekly trip distance Monthly trip distance Yearly trip distance
Total elapsed time Weekly elapsed time Monthly elapsed time
SSS
SSS
SSS
Yearly elapsed time

MODE1
MODE2
ENG-49
Setup mode
Continue
Setup mode (SETUP)
Switching to Setup mode
Press and hold the MENU button in the Clock mode or Sports 
mode until “SETUP MENU” appears on the screen, then the 
wristwatch switches to the Setup mode automatically.
Function in Setup mode
Setup mode is used to change various settings of the wristwatch. Switch the setup 
items pressing the MODE1 or MODE2 button.
Once any setting is changed, confirm it pressing the * MENU button.
Unless you perform an operation within 3 minutes, it returns to Clock mode. In such cases, *
any change is not reflected.
Shortcut from Clock mode or Sports mode does not display the altitude adjusting screen *
as shown in the figure below. It directly switches to the setting entry screen.
Setting the 
clock/date
Correcting the sea 
level altitude
(page 50)
(page 60)
Setting the 
alarm clock
Setting sound
(page 51)
(page 59)
Setting the tire 
circumference
Setting the 
auto-mode
(page 52)
(page 58)
Searching for 
sensor ID
Total trip distance/total 
elapsed time entry
(page 53)
(page 57)
Setting the 
measurement unit
Setting the 
record interval
(page 55)
(page 56)
MENU
(press & hold)

ENG-50
Setup mode
Setting the clock/date CLOCK DATE
Set the “Clock display format”, “Hour”, “Minute”, “Date display format”, “Year”, “Month” 
and “Day”.
Once you change any date in the past, some integrated values for the year, month, *
or week in the Data mode “Past records” (page 47) are deleted according to the 
relevant changes.
Press and  hold  the * MODE1  or  MODE2 button to  increase/decrease  the  number 
quickly.
1. Press and hold the MENU button in the Clock mode or Sports 
mode until “SETUP MENU” appears on the screen.
The wristwatch  switches  to  “CLOCK  DATE”  automatically. 
Then, confirm it with the SSS button.
Switch the mode : 
MENU
(press & hold)
Confirm : 
SSS
2. Select the clock display format.
Select “24h (24 hour)” or “12h (12 hour)” pressing the MODE1
and MODE2 buttons, and confirm with the SSS button.
24h  12h : 
MODE2
MODE1 (or)
Confirm : 
SSS
3. Enter the “Hour” or “Minute”.
Enter the “Hour” pressing the MODE1 and MODE2 buttons, confirm 
with the SSS button, and then enter the “Minute” in the same way.
Increase/decrease : 
MODE2
MODE1 (or)
Confirm : 
SSS
4. Select the date display format.
Select the date display format from “YY.MM.DD”, “DD.MM.YY”, 
and “MM.DD.YY” pressing  the  MODE1  and  MODE2  buttons, 
and confirm with the SSS button.
Switch the display : 
MODE2
MODE1 (or)
Confirm : 
SSS
5. Enter the “Year”, “Month” and “Day”.
Enter the “Year”, “Month” and “Day” in the display order selected 
in Step 4 pressing the MODE1 and MODE2 buttons, and confirm 
with the SSS button. Enter only the last 2 digits of the year.
Increase/decrease : 
MODE2
MODE1 (or)
Confirm : 
SSS
YY/MM/DD
Display format
Display format
Hour
Minute

ENG-51
Setup mode
Continue
Pressing the 
6. MENU button confirms the change, and returns 
to the Setup mode “CLOCK DATE”.
Press the MENU button repeatedly to switch to another mode.
To the mode top/switch the mode : 
MENU
Setting the alarm clock ALARM
Set the alarm in Clock mode.
Press and  hold  the * MODE1  or  MODE2 button to  increase/decrease  the  number 
quickly.
1. Press and hold the MENU button in the Clock mode or Sports 
mode until “SETUP MENU” appears on the screen.
It switches to “CLOCK DATE” automatically.
Switch modes :
MENU
(press & hold)
2. Switch to “ALARM” pressing the MODE1 or MODE2 button, 
and then confirm it pressing the SSS button.
Switch screen : 
MODE2
MODE1 (or)
Confirm : 
SSS
3. Select “ON” or “OFF” pressing the MODE1 or MODE2 button.
To use the alarm clock, select “ON” and press the SSS button 
to proceed to Step 4. Otherwise, select “OFF” to proceed to 
Step 5.
ON  OFF: 
MODE2
MODE1 (or)
Confirm : 
SSS
You can set on/off of the alarm clock also in Clock mode. *
When it is on,   icon appears.
4. Enter “Hour” and “Minute”.
Enter “Hour” pressing the MODE1 and MODE2 buttons, and 
confirm it pressing the SSS button. Then, enter “Minute” in 
the same way.
Increase/decrease:
MODE2
MODE1 (or)
Confirm : 
SSS
MinuteHour

ENG-52
Setup mode
Pressing the 
5. MENU button confirms the change, and returns 
to the Setup mode “ALARM”.
Press the MENU button repeatedly to switch to another mode.
To the mode top/switch the mode : 
MENU
Setting the tire circumference TIRE
Set the tire circumference (peripheral length) to SP1 (Speed sensor 1) and SP2 (Speed 
sensor 2) synchronized according to “Searching for sensor ID” (page 53).
For the tire circumference, see “Tire circumference” (page 17).*
Press and  hold  the * MODE1  or  MODE2 button to  increase/decrease  the  number 
quickly.
1. Press and hold the MENU button in the Clock mode or Sports 
mode until “SETUP MENU” appears on the screen.
It switches to “CLOCK DATE” automatically.
Switch modes :
MENU
(press & hold)
2. Switch to “TIRE” pressing the MODE1 or MODE2 button, and 
then confirm it pressing the SSS button.
Switch screen : 
MODE2
MODE1 (or)
Confirm : 
SSS
3. Select  (Sensor 1) or   (Sensor 2) by pressing the MODE1
or MODE2 button.
:
MODE2
MODE1 (or)
Confirm : 
SSS
When using a wristwatch for a single bicycle, set the tire *
circumference to   (Sensor 1) only. When using a wrist-
watch commonly for two bicycles, sets the tire circumference 
of the second bicycle to   (Sensor 2).
Sensor  currently 
selected
Tire circumference 
set to the  sensor 
currently selected

ENG-53
Setup mode
Continue
4. Enter the last 2 digits for the tire circumference of the sensor 
selected in Step 3 using the MODE1 and MODE2 buttons, and 
move digits using the SSS button.
Then, enter the first 2 digits in the same way.
Increase/decrease:
MODE2
MODE1 (or)
Move digits: 
SSS
Pressing the 
5. MENU button confirms the change, and returns 
to the Setup mode “TIRE”.
Press the MENU button repeatedly to switch to another mode.
To the mode top/switch the mode : 
MENU
Switching to the Sports mode displays the sensor icon (*  or  ) selected. Even 
when a wristwatch is commonly used for 2 bicycles, the speed sensor is recognized 
automanically; accordingly, the measurement can be started appropriately (it may 
take time to recognize it automatically depending on the situation).
For details, see “Automatic recognition of the speed sensor ID” on page 7.
Searching for sensor ID SYNC ID
Pairing the wristwatch with the heart rate and speed/cadence sensors.
This unit requires checking of the sensor ID in order for the wristwatch to receive signals *
from the sensors. Once you format the wristwatch, or when you use a new sensor, syn-
chronize the sensor ID according to the following procedure.
When you use the unit for the first time (at factory default setting), each sensor *
ID has  been  synchronized  to the  wristwatch  in  the  package;  accordingly,  the 
following procedure is not required.
To synchronize the sensor ID, each sensor must be near the wristwatch.*
Check that there is not any other sensor of the same type nearby. *
1. Press and hold the MENU button in the Clock mode or Sports 
mode until “SETUP MENU” appears on the screen.
It switches to “CLOCK DATE” automatically.
Switch modes :
MENU
(press & hold)
2. Switch to “SYNC ID” pressing the MODE1 or MODE2 button, 
and then confirm it pressing the SSS button.
Switch screen : 
MODE2
MODE1 (or)
Confirm : 
SSS

ENG-54
Setup mode
3. Select the sensor ID to be checked.
Select from “HR (heart rate sensor)”, “SP1 (speed sensor 1)”, 
and “SP2 (speed sensor 2)” pressing the MODE1 and MODE2
buttons, and then confirm it pressing the SSS button.
HR  SP1  SP2: 
MODE2
MODE1 (or)
Confirm : 
SSS
SP2*  is  used  when  a wristwatch  is  commonly  used  for  2 
bicycles. Once you synchronize the ID of the second bicycle 
equipped with a sensor with SP2 in advance, the wristwatch 
can identify the second bicycle automatically.
4. Press the SSS button to start searching for the ID.
When you select “SP1” or “SP2”, press the RESET button on 
the speed sensor. When you selected “HR”, wear the heart 
rate sensor (page 13), or transmit a sensor signal according 
to the following simple method below.
When  the  heart rate  or speed/cadence  is  displayed  with 
“ID-OK” on the screen, synchronization is completed.
Start searching : 
SSS
This unit enters the search mode for 5 minutes after starting *
the ID sync. Press the SSS button in the search mode to 
cancel the ID synch, and “ID-SKIP” is displayed. If any sen-
sor signal is not received in 5 minutes, “ID-ERROR” is dis-
played. When “ID-SKIP” or “ID-ERROR” is displayed, the ID 
has not been synchronized properly.
*Even when the heart rate sensor is not worn, 
it transmits a heart rate signal by rubbing both 
electrode pads with your thumbs.
Pressing the 
5. MENU button confirms the change, and returns 
to the Setup mode “SYNC ID”.
Press the MENU button repeatedly to switch to another mode.
To the mode top/switch the mode :
MENU
When you use * SP2, set the tire circumference of   (Sensor 2) according to “Setting 
the tire circumference” (page 52).
Electrode pad

ENG-55
Setup mode
Continue
Setting the measurement unit UNITS
Change the speed unit and temperature unit.
Stop measurement and perform the resetting operation (page 27) before you change *
the unit. Unless you perform the resetting operation, “DATA RESET” appears on the 
screen, preventing change of the unit.
1. Press and hold the MENU button in the Clock mode or Sports 
mode until “SETUP MENU” appears on the screen.
It switches to “CLOCK DATE” automatically.
Switch modes : 
MENU
(press & hold)
2. Switch to “UNITS” pressing the MODE1 or MODE2 button, 
and then confirm it pressing the SSS button.
Switch screen : 
MODE2
MODE1 (or)
Confirm : 
SSS
3. Select the speed unit pressing the MODE1 or MODE2 button.
To switch the speed unit only, proceed to Step 5. To change 
the temperature unit afterwards, press the SSS button, and 
then proceed to Step 4.
km/h  mph : 
MODE2
MODE1 (or)
Confirm : 
SSS
4. Select the temperature  unit  using  the  MODE1  and MODE2
buttons.
˚C  ˚F : 
MODE2
MODE1 (or)
Pressing the 
5. MENU button confirms the change, and returns 
to the Setup mode “UNITS”.
Press the MENU button repeatedly to switch to another mode.
To the mode top/switch the mode : 
MENU
After the measurement unit is switched, the total distance measured in the past is *
automatically converted to the new unit.
Current speed unit
Current
temperature unit

ENG-56
Setup mode
Setting the record interval SAMPLE RATE
In primary measurement, the measurement data is recorded in the selected intervals 
(seconds).
Stop the measurement and perform the resetting operation (page 27) before you *
change the record interval. Unless you perform the resetting operation, “DATA RESET”
appears on the screen, preventing change of the record interval.
You cannot set the record interval to off.*
1. Press and hold the MENU button in the Clock mode or Sports 
mode until “SETUP MENU” appears on the screen.
It switches to “CLOCK DATE” automatically.
Switch modes : 
MENU
(press & hold)
2. Switch to “SAMPLE RATE” pressing the MODE1 or MODE2
button, and then confirm it pressing the SSS button.
Switch screen : 
MODE2
MODE1 (or)
Confirm : 
SSS
3. Select “T-10s (10 seconds)”, “T-5s (5  seconds)”, “T-3s (3 
seconds)” or  “T-2s (2  seconds)”  pressing  the  MODE1 or 
MODE2 buttons.
T-10s  T-5s  T-3s  T-2s : 
MODE2
MODE1 (or)
Pressing the 
4. MENU button confirms the change, and returns 
to the Setup mode “SAMPLE RATE”.
Press the MENU button repeatedly to switch to another mode.
To the mode top/switch the mode : 
MENU
The wristwatch stores up to 36000 points of data, and the maximum record time *
(maximum time up to the memory point utilization of 100%) depends on the intervals 
of the seconds selected. The following time lengths can be used as a guideline.
T-10s (at intervals of 10 seconds) : up to 100 hours
T-5s (at intervals of 5 seconds) : up to 50 hours
T-3s (at intervals of 3 seconds) : up to 30 hours
T-2s (at intervals of 2 seconds) : up to 20 hours
The current memory point utilization can be viewed in the Data mode “File view” *
(page 40).
Current
record interval

ENG-57
Setup mode
Continue
Total trip distance/total elapsed time entry TOTAL DATA
You can enter any values to the total trip distance and total elapsed time in the Data 
mode “Past records” (page 47), then you can start with the values entered.
The total trip distance and total elapsed time can be retained even after formatting the 
wristwatch or replacing the wristwatch.
Press and  hold  the * MODE1  or  MODE2 button to  increase/decrease  the  number 
quickly.
1. Press and hold the MENU button in the Clock mode or Sports 
mode until “SETUP MENU” appears on the screen.
It switches to “CLOCK DATE” automatically.
Switch modes :
MENU
(press & hold)
2. Switch to  “TOTAL  DATA”  pressing the MODE1  or MODE2
button, and then confirm it pressing the SSS button.
Switch screen : 
MODE2
MODE1 (or)
Confirm : 
SSS
3. For entry, change each digit one by one for the total trip distance 
by pressing the MODE1 or MODE2 button, and move digits by 
pressing the SSS button. (6-digit integer number)
To enter the total trip distance only, proceed to Step 5 after 
the entry. To enter the total elapsed time at the same time, 
move digits  to  the  far left,  and  then  proceed  to  Step  4  by 
pressing the SSS button.
Increase/decrease:
MODE2
MODE1 (or)
Move digits: 
SSS
4. For entry,  change  each  digit for  the  total  elapsed  time  by 
pressing the MODE1 or MODE2 button, and move digits by 
pressing the SSS button.
Increase/decrease:
MODE2
MODE1 (or)
Move digits: 
SSS
Pressing the 
5. MENU button confirms the change, and returns 
to the Setup mode “TOTAL DATA”.
Press the MENU button repeatedly to switch to another mode.
To the mode top/switch the mode : 
MENU
Total trip distance
Total elapsed time 

ENG-58
Setup mode
Setting the auto-mode AUTO MODE
Switch on/off of the auto-mode (page 26).
1. Press and hold the MENU button in the Clock mode or Sports 
mode until “SETUP MENU” appears on the screen.
It switches to “CLOCK DATE” automatically.
Switch modes : 
MENU
(press & hold)
2. Switch to  “AUTO MODE”  pressing  the  MODE1  or  MODE2
button, and then confirm it pressing the SSS button.
Switch screen :
MODE2
MODE1 (or)
Confirm : 
SSS
3. Select “ON” or “OFF” pressing the MODE1 or MODE2 button.
ON  OFF: 
MODE2
MODE1 (or)
Pressing the 
4. MENU button confirms the change, and returns 
to the Setup mode “AUTO MODE”.
Press the MENU button repeatedly to switch to another mode.
To the mode top/switch the mode : 
MENU
Current setting

ENG-59
Setup mode
Continue
Setting sound SOUND
Switch on/off of the button operation sound and target heart rate zone alarm sound.
1. Press and hold the MENU button in the Clock mode or Sports 
mode until “SETUP MENU” appears on the screen.
It switches to “CLOCK DATE” automatically.
Switch modes : 
MENU
(press & hold)
2. Switch to “SOUND” pressing the MODE1 or MODE2 button, 
and then confirm it pressing the SSS button.
Switch screen : 
MODE2
MODE1 (or)
Confirm : 
SSS
3. Select “ON” or “OFF” of the button operation sound pressing 
the MODE1 or MODE2 button.
To switch the button operation sound only, proceed to Step 
5. To change also the target heart rate zone alarm sound, press 
the SSS button, and then proceed to Step 4.
ON  OFF: 
MODE2
MODE1 (or)
Confirm : 
SSS
4. Select “ON” or “OFF” of the target heart rate zone alarm sound 
pressing the MODE1 or MODE2 button.
ON  OFF: 
MODE2
MODE1 (or)
Pressing the 
5. MENU button confirms the change, and returns 
to the Setup mode “SOUND”.
Press the MENU button repeatedly to switch to another mode.
To the mode top/switch the mode : 
MENU

ENG-60
Setup mode
Correcting the sea level altitude ALT
Correct the sea level altitude.
Stop the measurement before you change the settings.*
In case of  shortcutting from Clock mode or  Sports mode, proceed to the  step 2 *
skipping the step 1.
For details of the altitude, see “Basic knowledge of the altitude measurement” on page 61.*
Press and  hold  the * MODE1  or  MODE2 button to  increase/decrease  the  number 
quickly.
1. Press and hold the MENU button in the Clock mode or Sports 
mode until “SETUP MENU” appears on the screen.
It switches to “CLOCK DATE” automatically.
Switch modes : 
MENU
(press & hold)
2. Switch to “ALT” using the MODE1 or MODE2 button, and then 
confirm it using the SSS button.
Switch screen : 
MODE2
MODE1 (or)
Confirm : 
SSS
3. Select “REF  (correcting  the  sea  level altitude)”  or  “HOME
(home altitude)” with the MODE1 and MODE2 buttons, and 
then confirm it with the SSS buttons.
There are 2 ways to correct the sea level altitude with this unit. One *
is REF (correcting the sea level altitude), and HOME (home altitude), 
the other. For details, “Sea level altitude correction” on page 61.
4. Select “+” or “-“ of the sea level altitude. Then, change each 
digit one by one for the value using the MODE1 and MODE2
buttons, and move digits  using the SSS button.
Increase/decrease:
MODE2
MODE1 (or)
Move digits: 
SSS
The altitude is entered  in  4 digits in the unit  of  meter, 5 *
digits in the unit of feet, both in integer numbers.
Pressing and holding the * MODE1 button for 3 seconds confirm the 
changes, and shortcuts to the previous Clock mode or Sports mode.
Pressing the 
5. MENU button confirms the change, and returns 
to the Setup mode “ALT”.
Press the MENU button repeatedly to switch to another mode.
To the mode top/switch the mode : 
MENU
Current sea level 
altitude
Shortcut from the Clock mode or Sports mode

ENG-61
Continue
Altitude measurement function
This unit measures the atmospheric pressure using a built-in pressure sensor and 
determines the altitude. It estimates the altitude using the relation between the altitude 
and pressure of ISO 2533 (Standard atmosphere), which was developed based on the 
international standard atmosphere specified by the International Civil Aviation Orga-
nization (ICAO). Generally, a conventional pressure sensor is affected by temperature 
and can cause a large margin of error, but this unit is temperature-compensated and 
records 1 meter resolution. This unit is designed not to reflect the change in atmo-
spheric pressure to the altitude measurement except during a ride; therefore, the alti-
tude is less prone to weather changes, so while not in motion, value shift is minimal.
The altitude measurement may change temporarily when going outside from an indoor *
room. This is due to a rapid temperature change, and is not a malfunction. It will return 
to the normal value after a while.
Sea level altitude correction
There are 2 ways to correct the sea level altitude with this unit. It is recommended to 
correct the sea level altitude just before measurement, taking either following methods.
The sea level altitude correction screen is displayed in Setup mode in the * MENU, or is 
shortcut to from the orthrometric height screen in Clock mode or in Sports mode.
UÊ REF (sea level altitude correction): Enter the altitude at the current point.
Enter the actual value at the point where the sea level altitude is 
well known, such as along the seashore, or at a sign on the moun-
tain, etc.
Press and hold * MODE1 and SSS, or MODE2 and SSS, simultaneously 
on the setting screen to reset the corrected value to the default value (a 
value according to ISO2533).
UÊ HOME (home altitude setting): Apply the altitude set beforehand.
Preset the sea level altitude at your home in advance. Move to the ALT
HOME  screen,  and  then  return  to  Clock  mode  or  Sports  mode  by 
pressing MENU or the relevant shortcut. Then, the sea level altitude 
changes to the preset value. You can start with the correct sea level 
altitude by setting home altitude before starting from your home.
Timing for  updating  the sea  level  altitude, ascending 
altitude, and temperature
The timing for updating the sea level altitude, ascending altitude, and temperature 
data differs  depending  on  whether the  Sports  mode  is  in  measurement  or  is 
stopped.
Condition Timing for updating
When the Sports mode is in measurement, and a speed sensor signal is received
5 seconds
When the Sports mode is stopped, or no speed sensor signal is received
5 minutes
This is also valid in Clock mode.*
1
Basic knowledge of the altitude measurement

ENG-62
Relation between the altitude and atmospheric pressure
The higher the altitude, the lower the atmospheric pressure. At an altitude of 500 m 
or less, the pressure changes by 12 hPa per 100 m of altitude.
Knowledge related to weather and altitude
The change in atmospheric pressure when the weather changes from a good condition such 
as clear and sunny, to a bad condition such as rainy and cloudy is equivalent to the ascending 
altitude of about 100 m. Thunder storms will be result in even larger changes. Furthermore, 
the atmospheric pressure measurements may change more than 30 m in altitude change from 
sunrise to sunset even under stable clear weather conditions.
2
3

ENG-63
Continue
This section  is  just  a general  overview  of  training  with  heart  rate  data.  For more 
complete information, there are books and websites with more in-depth information. 
Generally, the heart rate increases during exercise, getting higher in conjunction with 
the intensity of the workout. The measurement of your heart beat is a good indicator 
of the intensity of your workout. By setting target HR (heart rate) zones and sticking 
to pre-set exercises, you will be able to work out more efficiently. Before beginning a 
training program, be sure to first consult a medical specialist or sports trainer.
Target heart rate zone
Bicycling is one of the best activities to improve your general fitness. To improve 
your overall fitness through bicycling, set a target heart rate zone from between 
30% and 70% of your maximum HR, depending on your physical strength. For 
best results, exercise consistently in this zone for periods of at least 20-30 minutes, 
3 or more times a week. Obtain your target heart rate zone from either of the 2 
ways below.
Training level for improving general fitness
Check the training level according to your age using the graph below. For begin-
ners, it is recommended to start with the level of 30% of your max. From this 
point, gradually increase the level according to your fitness level and experience. 
Training at levels over 70% of your HR max will focus more on anaerobic ex-
ercise, and less on aerobic exercise. Weight loss usually occurs through longer 
rides (over 1 hour) at lower HR levels.
1
Heart rate training
PULSE RATE (bpm)
AGE
200
180
160
140
120
100
90
20 30 40 50 60 70
TARGET
ZONE
TARGET
ZONE
30%
40%
50%
60%
70%
80%
Exercise Level
30%
40%
50%
60%
70%
80%
MAXIMUM HEART RATE (204 – 0.69 x  AGE)MAXIMUM HEART RATE (204 – 0.69 x  AGE)
190 – AGE
180 – AGE
190 – AGE
180 – AGE

ENG-64
Obtaining individual heart rate zone for building up power
Athletic ability is different from person to person. The effective and reasonable target 
heart rate zone has to be obtained from the actual ride data. A time trial for 20 minutes 
or 5 km (hereinafter abbreviated as TT) is required to measure the actual data. Perform 
the TT under the following conditions, according to the specified procedure.
TT is a training item, in which riders bicycle a specified distance at full speed. *
The last half is especially a very physically demanding workout. Maintain the 
pace so that you can ride the specified distance at a stable speed.
Conditions for time trials
For the TT measurement, a continuous ride for 20 minutes is ideal. When 
such a course that you can ride continuously for 20 minutes is not available, 
use a 5 km course that you can ride continuously. Measure the course distance 
in advance, and specify the start and goal points. Repeat the TT twice, and 
calculate the average of the average heart rates in the 2 sessions, which will 
be used as an average level for setting the zone.
Procedures for time trial measurements
Caution:
Maintain a good physical condition. If you have any worries, consult with UÊ
a doctor before you attempt any time trial.
Do not perform any TT on a road where many signals are located and the UÊ
traffic is heavy.
Be sure to pay attention to the road ahead during a TT.UÊ
Perform a TT in a week which is scheduled with relatively mild training.*
Warm up sufficiently at least for 30 minutes before you attempt any TT.*
Select the manual measurement (on page 27).*
Stop your bicycle at the start point, and reset the wristwatch.
1.
Press the 
2. SSS button to start the TT.
Gradually accelerate up to a stable speed in the first 1-minute. Keep up the 
intensity level that you feel is moderately difficult. Set a pace so that you 
do not slow down in the last half, and maintain the pace to the finish.
Once you reach the goal, stop the measurement by pressing the 
3. SSS button.
Cool down for 30 minutes while drinking some water.
4.
Repeat the TT once more.
5.
Repeat Steps 1 to 3.
Check the measurement data.
6.
Record the average heart rate of two TT data from the Data mode “File view” 
(page 40). Record the other data (time, average cadence, average speed, 
etc.) for your reference.

ENG-65
Continue
Obtain your target heart rate zone from the table below according to the 
7.
average heart rate recorded.
e.g.) Average heart rate at 20 minutes time trial is 100%.
Heart rate zone level Lower limit Upper limit
1 (Active Recovery) 0 % 64 %
2 (Endurance) 65 % 79 %
3 (Tempo) 80 % 90 %
4 (Lactate Threshold) 91 % 101 %
5 (VO2 Max) 102 % 112 %
An elite ride should set the value 4% lower than those values above.*
For example, when the average heart rate at 20 minutes time trial is 175 
bpm, the zone is categorized as the table shown below.
Heart rate zone level Lower limit Upper limit
1 (Active Recovery) 0 112
2 (Endurance) 114 138
3 (Tempo) 139 158
4 (Lactate Threshold) 159 177
5 (VO2 Max) 178 196
Set the calculated value to the heart rate target zone.
8.
For details of setting the heart rate target zone, see “Setting the target heart *
rate zones” in Option mode (page 37).

ENG-66
Training for competition
Measure your resting heart rate just after waking in the morning and your maximum 
heart rate (perhaps during competition). Then set your target zone according to 
your goal:
A) For recovery, endurance training, and weight loss :
60% - 70% (aerobic exercise)
B) For quality endurance and tempo training :
70% - 80% (aerobic exercise)
C) For increasing TT and race ability, and VO2 max :
85% + (anaerobic exercise)
D) For anaerobic capacity and sprinting :
92.5% + (anaerobic exercise)
Training level (%) = x 100
Target heart rate = (Maximum heart rate - Resting heart rate) x
+ Resting heart rate
Resting heart rate
Your resting heart rate is usually the lowest recorded rate soon after waking 
up in the morning.
Maximum heart rate
The following calculations are generally used: (220 - age) or (204 - 0.69 x age). 
For more precise figure, consult a training specialist.
2
(Target heart rate) - (Resting heart rate)
(Maximum heart rate) - (Resting heart rate)
Training level (%)
100

ENG-67
Continue
Use of the target zone
When the heart rate is out of the zone during the measurement, the wristwatch 
sounds an alarm and notifies the rider by flashing    . The heart rate zone is se-
lected from 5 predetermined zones.
For a training aiming at a heart rate of 140 to 160 bpm, select HR.ZONE:3 as shown 
below. Then, the wristwatch sounds an alarm when the heart rate falls below 140 
bpm, or rises above 160 bpm. Once the target zone is set to On, the relevant data 
are recorded and the time in the zone, time above the zone, and time below the 
zone and their percentages can be viewed in the file view (page 40).
The alarm sound is interlocked with the start/stop of the measurement.*
You can enter any upper/lower limit to each zone.*
Select “OFF” of the target heart rate zone, select Zones 1 to 5, change the upper *
and lower limits, and select “ON” or “OFF” of the zone sound in the Option mode 
“Setting the target heart rate zones” (page 37). You can select “ON” or “OFF” of 
the zone sound also in the Setup mode “Setting sound” (page 59).
3
60 200
bpm
Heart rate
HR.ZONE :1
100 - 120 bpm
HR.ZONE :2
120 - 140 bpm
HR.ZONE :3
140 - 160 bpm
HR.ZONE :4
160 - 180 bpm
HR.ZONE :5
180 - 200 bpm
Default zone
80 100 120 140 160 180
Target training zone
Heart rate zone
ZONE:1
ZONE:2
ZONE:3
ZONE:4
ZONE:5
Alarm Alarm

ENG-68
If a malfunction occurs, check the following before contacting CatEye or your retailer 
for repair or service.
Trouble on display
Trouble Check Items Remedy
Display motion  becomes 
slower.
Is the surrounding temperature 
low (below zero degree Celsius 
or 32 degrees Fahrenheit)?
Temperatures below  freezing may  result  in 
slower screen response. Data is not affected.
 icon appears. The remaining battery capac-
ity for the wristwatch is low.
Replace it with a new battery (CR2430).  After 
replacement, be sure to perform the restarting 
operation (page 14).
“STOP” appears. The  stop  reminder  function 
(page 27) is activated.
Once  any sensor  signal  is received,  the  stop 
reminder is canceled.
Ignore this during measurement.
“MEMORY” icon flashes on 
the screen  every  2  min-
utes.
The remaining  wristwatch 
memory capacity is low.
It  is  recommended  to  delete  the files  (page 
45).
When using the optional “USB communication *
kit”, delete the files after you send the saved 
files to your PC.
“MEMORY  FULL”  i con 
flashes on the screen every 
2 minutes.
The data volume exceeded the 
wristwatch memory capacity 
during measurement.
Measurement data can no longer be recorded. 
Delete the files (page 45).
When using the optional “USB communication *
kit”, delete the files after you send the saved 
files to your PC.
No displays appear. Is  the  battery for  the wrist-
watch empty?
Replace it with a new battery (CR2430).  After 
replacement, be sure to perform the restarting 
operation (page 14).
Meaningless display appears.
Perform the restarting operation (page 14).
Cannot measure the current 
speed or cadence.
Is the  Speed  and Cadence 
sensor icon on   ? If   icon is off, the  wristwatch cannot receive 
any data. Press the MODE1 or MODE2 button to 
cancel the transmission sleep (page 23).
Check  whether the  distance 
between  the  speed/cadence 
sensor and the magnet is too 
large.
Adjust the position of the speed/cadence sensor 
and that of the magnet correctly. (See “Bicycle 
Installation” on page 10).
Is  the  sensor  zone  of  the 
speed/cadence sensor off the 
center of the magnet?
Has the power-saving mode 
been activated, entering 
Clock mode?
Press  the MENU  button  to switch  to  Sports 
mode.
The display may be  delayed depending on the 
wireless transmission condition. Check whether 
any speed  signal  is received  by  spinning the 
wheel for a while.
For details, see “Automatic recognition of the *
speed sensor ID” on page 7.
Is the  battery  for  the speed 
sensor empty?
Replace it with a new battery (CR2032).
Did you perform the format-
ting operation?
The sensor ID was deleted by formatting. Syn-
chronize the speed sensor ID again (page 53).
Trouble shooting

ENG-69
Continue
Trouble Check Items Remedy
Measure the current speed, 
but cannot measure the ca-
dence.
Is the connection on the ca-
dence side of the speed sen-
sor dirty?
The continuity on the cadence side of the speed 
sensor is bad.
Loosen  the  set screw on  the  cadence  side  to 
remove the cadence sensor. Clean the pins with 
a dry cloth and replace the sensor. After cleaning, 
adjust  the distance  to  the  magnet,  and then 
firmly secure the sensor.
Heart  rate  signals  are  not 
received.
Is the Heart rate sensor icon 
on  ? If  icon is off, the wristwatch cannot receive 
any data. Press the MODE1 or MODE2 button to 
cancel the transmission sleep (page 23).
Has the power-saving mode 
been activated, entering 
Clock mode?
Press  the MENU  button  to switch  to  Sports 
mode.
Is  the  heart  rate  sensor  at-
tached  securely  to  your 
body?
Adjust the electrode pad with its rubber surface 
to have a good contact with the body.
Dry skin 
(particularly in winter)
Slightly moisten the electrode pad of the heart 
rate sensor.
Is the battery for the heart rate 
sensor used up?
Replace it with a new battery (CR2032).
Check whether   lights up 
on the wristwatch screen. 
The remaining battery capacity of the wristwatch 
is low. Replace it with a new battery (CR2430). 
After replacement, be sure to perform the restart-
ing operation (page 14).
Is the  electrode  pad overly 
worn and damaged after long 
use?
Replace it with a new heart rate sensor.
Did you perform the format-
ting operation?
The sensor ID was deleted by formatting. Synchro-
nize the heart rate sensor ID again (page 53).
Fluctuation in the heart rate 
indicator, for example it re-
turns to  zero  and then  the 
heart  rate  is  measured 
again.
Is the  electrode  pad  being 
worn correctly?
To wear the electrode pad correctly, follow the 
instructions  for wearing the  heart rate sensor 
(page 13).
Moving the main unit away 
from your body will prevent 
measurement  of  the  heart 
rate.
Check whether   lights up 
on the wristwatch screen. 
The remaining battery capacity of the wristwatch 
is low. Replace it with a new battery (CR2430).  
After replacement, be sure to perform the restart-
ing operation (page 14).
Is the battery for the heart rate 
sensor used up?
Replace it with a new battery (CR2032).
The sea level altitude display 
is wrong.
Have you  corrected  the sea 
level altitude?
The sea level altitude may have errors due to the 
change in atmospheric pressure. Correct the sea 
level altitude before use (page 60).
Some  values  in  the  Data 
mode “Past  records”  have 
been reset.
Did  you change any date  in 
the past according to “Setting 
the clock/date”?
Some values for the  year, month,  or week are 
deleted according to the relevant changes. For 
details, see page 48.

ENG-70
Trouble on operation
Trouble Check Items Remedy
Pressing and  holding  the 
MODE1  or  MODE2  button 
does not turn on a light.
Check  whether  the  Setup 
mode is displayed (page 49).
The  backlight does  not  turn  on  in  the  Setup 
mode.
Check whether   lights up 
on the wristwatch screen. 
The remaining battery capacity of the wristwatch 
is low. Replace it with a new battery (CR2430).  
After replacement, be sure to perform the restart-
ing operation (page 14).
Pressing the  SSS  button 
does not  start/stop  mea-
surement.
Check whether the auto-mode 
is turned on (with   illumi-
nating).
When the auto-mode is on (   icon appears), 
you cannot  start or  stop the  measurement  by 
pressing the button. To start/stop measurement 
by pressing  the  SSS button,  switch  the auto-
mode to off (page 58).
The heart rate sensor 
(speed sensor) ID check
failed.
The battery  for  the heart  rate  sensor (speed 
sensor) is possibly depleted. After replacing the 
battery with  a  new one  (CR2032),  check the 
sensor ID again (page 53).
Lap data cannot be stored. Check  whether “--”  appears 
for the Lap No. screen.
The data volume exceeds the wristwatch mem-
ory capacity. Delete the files (page 45).
When using the optional “USB communication *
kit”, delete the files after you send the saved 
files to your PC.
Does the lap time exceed 100 
hours (or the interval distance 
exceed 9999.99 km/mile) ?
Laps  cannot  be measured,  if recordable  range 
described on the left is exceeded. Reset the data 
(page 27), and then perform measurement again.
Is it immediately after press-
ing the LAP button?
Recording laps needs at least 5 seconds of in-
terval.
Abnormal values appear.
Are there any objects emitting 
electromagnetic waves (railway 
tracks, transmitting  stations 
for television, etc.) nearby?
Keep the unit away from any object that may be 
causing interference, and  reset the data (page 
27).
Any setting cannot be 
changed in Option mode or 
Setup mode.
Is it during measurement? Settings can be only viewed during the measure-
ment.
Check whether the auto-mode 
is on (  lights up). When the auto-mode is on (  lights up), the 
wristwatch may enter measurement mode due 
to electromagnetic  waves. Keep the  unit away 
from any object that may be causing interference 
with electromagnetic waves.
Check whether “DATA RESET”
is displayed.
To change the target heart rate zone, measure-
ment unit,  and  record interval,  the  resetting 
operation is  required.  Stop the  measurement, 
and perform the resetting operation (page 27).
The record data in the File 
view cannot be viewed to 
the end.
Check whether 
“MEMORY FULL” is 
displayed on the screen 
during measurement.
The data volume exceeds the wristwatch mem-
ory capacity. The data was saved automatically 
during measurement, and any subsequent data 
was no  longer  recorded.  Delete  the  files  for 
subsequent measurement (page 45).
When using the optional “USB communication *
kit”, delete the files after you send the saved 
files to your PC.

ENG-71
Continue
Water resistance of the wristwatch
The wristwatch is water-resistant up to 100 feet (30 meters). Refer to the following 
for proper use.
Before aquatic and outdoor activities
Caution:
The heart rate sensor and speed sensor are waterproof, but should not be used for UÊ
underwater activities.
Wash with pure water and wipe off any salt and dirt, after using in seawater or outdoors.UÊ
Do not press any button when wet.UÊ
Waterproof Capability
Rain, splash, etc. OK
Shower (hot water, and cold water) OK
Mild swimming (water depth: shallow) OK
Diving, surfing, and other marine sports 
(water depth: shallow) NO!
Snorkeling (water depth: deep) NO!
Replacing battery
The Q3a comes with factory-installed batteries. When a battery is empty, replace it 
with a new one according to the following instructions.
 Warning!!!:
Safely dispose of the old batteries, and do not place them within reach 
of children. If a battery is swallowed, consult a doctor immediately.
When any battery for the wristwatch, heart rate sensor, or speed sensor is depleted, *
we recommend replacing all batteries at the same time.
The battery life shown in this manual is not definitive and it varies depending on the *
use environment.
The battery cover sealing is critical to maintain the waterproof feature. When the battery *
cover and the o-ring are dirty, wipe off carefully and check that it is installed properly.

ENG-72
Wristwatch
Battery life: Approx. 1 year when used for 1 hour per day.
When the remaining battery capacity is low, *  lights up.
1. Open the  battery  cover  of the  wristwatch 
using a coin, etc.
Turn the inner cover to the open position using 
2. a coin, remove this, and insert a new lithium 
battery (CR2430) with the (+) side up.
Do not turn the inner cover excessively. *
Otherwise, the tab may be damaged.
Turn the inner cover to the closed position.
3.
Check that  the  cut-out  portion of  the  inner 
cover faces the pin, and the 2 tabs are fixed.
4. Press the AC button beside the inner cover 
using a tool with a pointed tip.
Check that  an  o-ring  is installed  to  the 
5.
groove on the wristwatch, and firmly close 
the battery cover.
After replacement, be sure to perform the 
6.
restarting operation  (page  14)  to set  the 
current time and date.
Heart rate sensor
Battery life: Approx. 1 year when worn for 1 hour per day.
1. Remove the battery cover on the back of the heart rate 
sensor using a coin, or the equivalent.
Insert new lithium batteries (CR2032) with the (+) sign 
2. upward, and close the battery cover firmly.
The heart rate sensor consumes power when worn. Remove the *
heart rate sensor whenever measurement is not performed.
Speed sensor
Battery life: Approx. 1 year when used for 1 hour per day.
1. Remove the battery cover on the speed sensor using a 
coin, or the equivalent.
Insert new lithium batteries (CR2032) with the (+) sign 
2. upward, and close the battery cover firmly.
After replacing batteries, be sure to check that the posi-
3. tions of the magnet and sensor are correct and they are 
secured firmly.
CR2032
Close
Open
CR2032
Close
Open
Close
O-ring
AC button
Battery cover
Inner cover
Tab
Pin
Pin
Cut-out portion
CR2430
Open position
Closed position
Open

ENG-73
Continue
Regularly perform the following instructions to prolong the life of your Q3a.
Regularly check that the positions of the magnets and sensors are correct, and they UÊ
are secured firmly.
When the wristwatch, heart rate sensor, and speed sensor are dirty, wash them with UÊ
water or wipe them with a soft cloth dampened with diluted neutral detergent, then 
wipe with dry cloth. Do not use solvents such as benzine or rubbing alcohol as they 
may damage the surfaces.
The heart rate strap absorbs sweat easily, and leaving it as such is unsanitary. Wash UÊ
with neutral detergent and keep it clean.
Maintenance
Spare accessories
Standard accessories
Optional accessories
#240-0570
Parts kit
#160-2385N
Speed sensor kit
#160-2395
HR Strap
#169-9691
Wheel magnet
#240-0590
USB communication kit
(included with the Windows version of e-Train Data™)
#169-9766
Cadence magnet
#166-5150
Lithium-battery  (CR2032) 
for sensors
#240-0580
Lithium-battery  (CR2430) 
for wristwatches
#160-2390N
Heart rate sensor kit
#240-0575
Bracket Handlebar-mount

ENG-74
Flow of the screen
Average speed
Average 
heart rate
Average 
cadence
Elapsed time
ALARM
Setting the alarm clock
Current speed
Heart rate Cadence
Training function*
SOUND
Setting sound
Current speed
Heart rate Cadence
Elapsed time
CLOCK DATE
Setting the clock/date
SPORTS MENU
SETUP MENU
PC LINK
PC link
HR ZONE
Setting the target 
heart rate zone
FILE
File view
CD.TIMER
Setting the training 
function
DATA MENU
OPTION MENU
CLOCK MENU
Day of the week
Clock
Date
Altitude
Temperature
Current speed
Heart rate Cadence
Trip distance
ALT
Correcting the sea level 
altitude
Clock mode
Sports mode
Setup mode
Option mode
Data mode
M1 M1
M2
M1
M1
M1
M1 M1
M1
M1
M1
M1
M2
M2
M2
M2
M2
M2
M2
M2
M2
M2
M2
MENU
MENU
MENU
MENU
MENU
MENU
MENU

ENG-75
Continue
MODE2
MODE1
M1 
Maximum speed
Maximum
heart rate
Maximum
cadence
Elapsed time
TIRE
Setting the tire 
circumference
Current speed
Heart rate Cadence
Lap timer
AUTO MODE
Setting the auto-mode
Altitude
Heart rate Temperature
Elapsed time
SYNC ID
Setting the sensor ID
Ascending altitude
Heart rate Slope angle
Elapsed time
Current speed
Heart rate Cadence
Calorie Consumption
TOTAL DATA
Total trip distance/total 
elapsed time entry
Current speed
Heart rate Cadence
Clock
UNITS
Setting the measurement unit
SAMPLE RATE
Setting the 
record interval
VIEW LOG
Log data
MENU
(press & hold)
MODE1
MODE2
MENU
MENU MENU M1 M1 M2 M2
M1
M1
M1
M1
M1
M1
M1
M1
M1
M1
M2
M2
M2
M2
M2
M2
M2
M2
M2
M2
Training function: Displays one of the following: countdown distance, countdown time, and *
interval.

ENG-76
Measurement function
Upper display
Current speed 0.0 (4.0) – 150.0 km/h 
0.0 (3.0) – 93.0 mph] (For 27-inch tire size)
Average speed 0.0 – 150.0 km/h [0.0 – 93.0 mph]
Maximum speed 0.0 (4.0) – 150.0 km/h [0.0 (3.0) – 93.0 mph]
Altitude -500 – 9000 m [-1640 – 29600 ft]
Ascending altitude 0 – 99999 m [ft]
Average lap speed 0.0 – 150.0 km/h [0.0 – 93.0 mph]
Maximum lap speed 0.0 (4.0) – 150.0 km/h [0.0 (3.0) – 93.0 mph]
Middle display
Heart rate 0 (30) – 240 bpm
Average heart rate 0 – 240 bpm
Maximum heart rate 0 (30) – 240 bpm
Average lap heart rate 0 – 240 bpm
Maximum lap heart rate
0 (30) – 240 bpm
Cadence 0 (20) – 199 rpm
Average cadence 0 – 199 rpm
Maximum cadence 0 (20) – 199 rpm
Average lap cadence 0 – 199 rpm
Maximum lap cadence
0 (20) – 199 rpm
Temperature -10 – +50 ˚C [+14 – +122 ˚F ]
Slope angle 0 – ±99 % (100 % = 45°)
Lap number 01 – 99
Lower display
Elapsed time 0:00’00”0 – 0:59’59”9 / 1:00’00” – 99:59’59”
Trip distance 0.00 – 9999.99 km [mile]
Countdown distance 9999.90 – 0.00 km [mile] (setting range : 9999.9 – 0.0 km [mile])
Countdown time 99:59’00” – 0:00’00” (setting range : 99:59’ – 0:00’)
Interval timer 99:59’59” – 1:00’00” / 0:59’59”9 – 0:00’00”0
(setting range : 99:59’59” – 0:00’00”)
Recovery time 0:00’00”0 – 0:59’59”9 / 1:00’00” – 99:59’59”
Lap timer 00’00”0 – 0:59’59”9 / 1:00’00” – 99:59’59”
Calorie consumption 0 – 999999 kcal (calculation-based estimation only)
Clock 0:00’00” – 23:59’59” [AM 1:00’00” – PM 12:59’59”]
(Both 12 and 24-hour modes can be selected)
Date 00.01.01 – 99.12.31 (display format can be switched)
Lap time 00’00”0 – 0:59’59”9 / 1:00’00” – 99:59’59”
Split time 00’00”0 – 0:59’59”9 / 1:00’00” – 99:59’59”
Lap (With the real time lap function)
Lap display:
Upper display (average lap speed, maximum lap speed)
Middle display (average lap heart rate, lap number, maximum lap heart rate)
Lower display (lap time, split time)
Real time lap display:
Upper display (average lap speed, maximum lap speed)
Middle display (average lap heart rate, maximum lap heart rate, cadence)
Lower display (lap timer, lap distance)
Specifications

ENG-77
Continue
Interval
Upper display (current speed, average speed, and maximum speed)
Middle display (current heart rate, average heart rate, maximum heart rate, current cadence, 
average cadence, and maximum cadence)
Lower display
(interval time, number of intervals, trip distance in an interval, and recovery time)
Saving the data
Saves the data at the time of resetting
(The oldest file will be deleted automatically when exceeding 30 files)
(The oldest file will be deleted and the data during the measurement will be saved automati-
cally when “MEMORY FULL” is displayed.)
Control system
8 bit one-chip microcomputer, crystal oscillator
Display system
Liquid crystal display (EL backlight)
Speed/Cadence sensor signal detection system
Noncontact magnetic sensor
Sensor signal transmission and reception
2.4 GHz ISM Band (With ID. Two IDs of SP1 and SP2 can be set for the speed sensor.)
Sensor coverage distance
5 m (above 5 m, transmission distance may vary due to environmental conditions) 
Operating temperature range
32 °F – 104 °F [0 °C – 40 °C] 
(This product will not function appropriately when exceeding the working temperature range. Slow 
response or black LCD at lower or higher temperature may happen respectively.)
Storage temperature range
-4 °F – 122 °F [-20 °C – 50 °C]
Wheel circumference set range
0100 to 3999 mm: 1 size for each speed sensor ID (default setting: SP1 = 2096, SP2 = 2050)
Power supply/battery life
Wristwatch : CR2430 x 1 / Approx. 1 year (When using 1 hour/day)
Heart rate sensor : CR2032 x 1 / Approx. 1 year (When worn about 1 hour per day)
Speed sensor : CR2032 x 1 / Approx. 1 year (When using 1 hour/day)
Dimensions/Weight
Wristwatch : 55.0 x 46.5 x 15.0 mm (excluding the projection and belt) / 56.4 g (With 
batteries)
Heart rate sensor : 12-13/16” x 1-1/4” x 1/2” (325.0 x 31.4 x 12.2 mm) / 1.41 oz (40 g) (With 
batteries)
Speed sensor :  2-9/16”  x  3-9/16”  x  9/16” (65.0  x 90.5  x  14.4  mm) /  1.25  oz (36 g) 
(With batteries)
When the elapsed time exceeds 100 hours, or the trip distance exceeds 9999.99 km/h, “* E” appears in place 
of the average speed.
When the elapsed time exceeds 100 hours, “* E” appears in place of the average heart rate and average cadence.
Designs and specifications are subject to change without notice, due to modifications or improvements.*

ENG-78
CATEYE Web Site (http://www.cateye.com)
For warranty service you must register your product. Please register your Q3a as 
soon as possible. CATEYE provides regular technical support and new  product 
information as much as possible. Please register on-line through the “Support” 
page on our web site.  You will need the product’s 7 -digit number (marked on the 
battery cover) to register your product.
Limited warranty
2-Year: wristwatch, heart rate sensor and speed sensor 
(Not including depletion of batteries)
CatEye products are warranted to be free of defects from materials and workman-
ship for a period of two years from original purchase. If the product fails to work 
during normal use, CatEye will repair or replace the defect at no charge. Service 
must be performed by CatEye or an authorized retailer. To return the product, pack 
it carefully and enclose the warranty certificate (proof or purchase) with instruction 
for repair. Please  write  or type your name and  address  clearly on the warranty 
certificate. Insurance, handling and transportation charges to CatEye shall be borne 
by person desiring service.
For UK  and  REPUBLIC  OF IRELAND  consumers,  please  return  to  the  place  of 
purchase. This does not affect your statutory rights.
Registration
CO.,LTD.
Service & Research Address for USA:
CatEye North America
2300 Central Ave Suite L Boulder, CO 80301
Phone: 303.443.4595 Fax: 303.473.0006
Toll Free: 800.5CATEYE E-mail: service@cateye.com
URL: http://www.cateye.com
Japan Office:
2-8-25, Kuwazu, Higashi Sumiyoshi-ku, Osaka 546-0041 Japan
Attn: CATEYE Customer Service Section

ENG-79
Continue
Index
2.4 GHz digital wireless system .........6
A
Accessories........................................ 8
Alarm clock mode ............................ 24
Altitude measurement........................ 6
Automatic recognition of the 
speed sensor ID................................. 7
Auto-mode
(automatic measurement)................ 26
B
Backlight .......................................... 23
Basic knowledge of the altitude 
measurement ................................... 61
Bicycle Installation ........................... 10
C
Clock mode (CLOCK) ....................... 24
Communication between your PC 
and this unit..................................... 46
Correcting the sea level altitude 
(ALT)................................................ 60
Countdown distance ........................32
Countdown time............................... 32
D
Data mode (DATA) ........................... 39
Data to be sent from this unit to 
your PC............................................ 47
Deleting files .................................... 45
Display data in Sports mode ...... 28, 29
F
File view (FILE) ................................ 40
Flow of the screen............................ 74
Formatting ................................. 14, 21
H
Heart rate sensor .............................13
Heart rate training ............................ 63
HOME (home altitude setting).......... 61
I
Interval............................................. 33
Interval time..................................... 33
L
Lap function..................................... 30
Lap time........................................... 31
Limited warranty.............................. 78
M
Maintenance..................................... 73
Manual measurement ......................27
Memory point ..................................41
O
Operation test ..................................19
Option mode (OPTION).................... 36
P
Pace function ................................... 30
Past records (VIEW LOG) ................ 47
PC link (PC LINK)............................. 45
Power-saving mode ......................... 23
Preparing the wristwatch ................. 14
R
Real time lap data ............................31
Recovery time.................................. 33
REF (sea level altitude correction) ...61
Registration ..................................... 78
Replacing battery ............................. 71
Resetting.......................................... 27
ENG-80
Restarting .................................. 14, 21
S
Saving and managing the files ......... 40
Screen display.................................... 9
Searching for sensor ID (SYNC ID)
... 53
Setting sound (SOUND) ................... 59
Settings to be changed from your PC
... 47
Setting the alarm clock (ALARM)..... 51
Setting the auto-mode 
(AUTO MODE).................................. 58
Setting the clock/date 
(CLOCK DATE) ................................. 50
Setting the measurement unit 
(UNITS)............................................ 55
Setting the record interval 
(SAMPLE RATE) .............................. 56
Setting the target heart rate zones 
(HR ZONE) ....................................... 37
Setting the tire circumference (TIRE)...
52
Setting the training function 
(CD.TIMER) ..................................... 36
Setup mode (SETUP) ....................... 49
Spare accessories............................ 73
Specifications................................... 76
Split time.......................................... 31
Sports mode (SPORTS) ................... 25
Starting/Stopping measurement ...... 26
Stop reminder.................................. 27
Switching between modes ............... 22
T
Target heart rate zone ................ 35, 63
Tire circumference ........................... 17
Tire circumference reference table... 17
Total trip distance/total elapsed 
time entry (TOTAL DATA) ................ 57
Training for competition................... 66
Training function.............................. 32
Transmission sleep mode ................ 23
Trouble shooting.............................. 68
U
Use of the target zone ...................... 67
V
Viewing the contents in a file ...........42
Viewing the lap data......................... 44
W
Water resistance .............................. 71
Wristwatch memory capacity limit... 40

Please fill with 7-digits numbers marked on the battery cover of main unit.
リストウォッチ裏面のバッテリーカバーに記載の7桁の数字をご記入ください。
Veuillez indiquer le numéro à 7 chiffres indiqué sur le couvercle de la pile de l’unité principale.
Geben Sie bitte die siebenstellige Nummer an, die auf der Batterieabdeckung der Haupteinheit steht.
Vul de 7-cijferige nummers in die op de batterijendeksel van de computer staan.
Por favor, complete el número de 7 dígitos mostrado en la tapa de las pilas de la unidad principal).
Inserire il codice di 7 cifre indicato sul coperchio del vano batterie dell’unità principale.
請填入手錶後蓋上刻印的7位數字。
请填入手表后盖上刻印的7位数字。
*1
INTERNATIONAL WARRANTY CERTIFICATE
CERTIFICAT DE GARANTIE INTERNATIONALE
INTERNATIONALES GARANTIEZERTIFIKAT
INTERNATIONAAL GARANTIECERTIFICAAT CERTIFICATO DI GARANZIA INTERNAZIONALE
CERTIFICADO DE GARANTÍA INTERNACIONAL
保証書
国际保固证明书國際保固證明書
Your name address or e-mail address will not be sold or shared with any other company.
ご送信いただいた情報や内容の管理には万全を期し、新製品情報やテクニカルサポート提供以外に使用することは一切ありません。
Votre adresse postale et votre adresse e-mail ne seront pas vendues ou transmises à d’autres entreprises.
Ihr Name oder Ihre E-Mail-Adresse wird weder weiterverkauft noch an eine andere Firma weitergegeben.
Uw naam, adres of e-mailadres zullen niet beschikbaar worden gesteld aan derden.
Su nombre, dirección o correo electrónico no serán vendidos o compartidos con otras empresas.
IIl vostro nome, indirizzo o indirizzo e-mail non saranno venduti o condivisi con altre società.
顧客情報內容將被妥善管理,只會使用在提供新產品信息及技術支援上。
顾客情报内容将被妥善管理,只会使用在提供新产品信息及技术支援上。
*1
Serial No
*1
Serial No
シリアルNo
No. de série
Seriennr
Serienummer
Nº de serie
Numero di matricola
產品編號
产品编号
Name
お名前(フリガナ)
Nom
Name
Naam
Nombre
Nome
姓名
姓名
Address
ご住所
Adresse
Adresse
Adres
Dirección
Indirizzo
地址
地址
E-mail address
Eメールアドレス
Adresse e-mail
E-mail-Adresse
E-mailadres
Dirección de correo electrónico
Indirizzo e-mail
郵箱地址
邮箱地址
Phone
電話番号
Téléphone
Telefon
Telefoon
Teléfono
Numero di telefono
電話號碼
电话号码
Dealer or Shop name
ご購入店名
Nom du magasin ou du revendeur
Name des Händlers oder des Geschäfts
Dealer of Naam van winkel
Nombre del proveedor o de la tienda
Nome del punto vendita
經銷商名
经销商名
Dealer or Shop address
所在地
Adresse du magasin ou du revendeur
Adresse des Händlers oder des Geschäfts
Dealer of Adres van winkel
Dirección del proveedor o de la tienda
Indirizzo del punto vendita
經銷商地址
经销商地址
The date of purchase
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