Casio Digital Diary Sf 3990 Users Manual

Sf-3990-E sf-3990-e

SF-3990 to the manual f99c432e-dc83-4b3c-ad1a-d393570d2cd6

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E

SF-3990

User’s Guide

RCA500238-1

GUIDELINES LAID DOWN BY FCC RULES FOR USE OF THIS UNIT
IN THE U.S.A. (not applicable to other areas).

NOTICE
This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and
can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will
not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined
by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that
to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Caution: Changes or modification to the product not expressly approved
by CASIO could void the user’s authority to operate the product.

English
Congratulations on your selection of this CASIO product! Be sure to keep
this manual in a safe place for future reference when necessary.

E-1

Contents
Read this first! ........................................................................................ E-3
Timekeeping Function ............................................................................ E-5
Alarm Function ....................................................................................... E-8
Inputting Characters .............................................................................. E-9
Recalling Data ..................................................................................... E-15
Editing Data ......................................................................................... E-15
Secret Memory Area ............................................................................ E-16
Conversion Mode ................................................................................. E-17
Memory Capacity Screen .................................................................... E-21
Calculator Mode ................................................................................... E-22
About the Power Supply ...................................................................... E-23
Messages ............................................................................................ E-25
World Time City Table .......................................................................... E-26
Storage Capacity ................................................................................. E-27
Specifications ....................................................................................... E-27

E-2

Read this first!
Before using the unit for the first time
Use the following procedure to load batteries and reset the unit before using
it for the first time.
1. Slide the battery compartment cover in the direction indicated by the arrow.

2. Slide the battery switch to the “REPLACE 1” setting.

3. Load the new battery into the battery compartment, making sure that the
positive (+) side of the new battery is facing up (so you can see it).
4. Slide the battery switch to the “REPLACE 2” setting and repeat step 3
for the other battery.
• Be sure to load two new CR2032 batteries only. Never mix an old battery
with a new one.
5. Slide the battery switch to the “LOCK” setting.

E-3

6. Press the RESET button. “RESET? Y/N” appears on the display.
The reset message appears in one of the six languages shown below.
RESET Message
ENGLISH
RESET? Y/N
GERMAN
RÜCKST.? J/N
FRENCH
REINIT? O/N
ITALIAN
AZZER? S/N
SPANISH
¿REP.? S/N
PORTUGUESE REPOSIC? S/N

START? Y/N
START? Y/N
COMMENC? O/N
INIZI? S/N
¿INICIO? S/N
COMEÇA? S/N

7. Use H or J to select “Y” and then press ENTER. This causes “START?
Y/N” to appear on the display.
8. Use H or J to select “Y” and then press ENTER.

• Initial settings after RESET
Home Time Zone: New York (NYC)
Home Time: 12:00 AM, January 1, 2002
World Time 1: London (LON)
World Time 2: Tokyo (TYO)
12/24-Hour Setting: 12-hour
9. Replace the battery compartment cover.

Keep written copies of important data.
CASIO COMPUTER CO., LTD. assumes no responsibility for any damage or
loss caused by deletion of data as a result of malfunction, repairs, or removal of both batteries.

Important Precautions
•
•
•
•

Keep away from direct flame.
Keep away from heat: direct sunlight, near heaters, etc.
Never try to disassemble the unit.
Clean exterior only with a soft cloth moistened in a weak solution of a mild
neutral detergent and water.
• Items described in this manual are subject to change without notice.
• CASIO COMPUTER CO., LTD. assumes no responsibility for any loss or
claims by third parties which may arise from the use of this product.

E-4

About the Low Battery Message
Replace the batteries as soon as possible after the “LOW BAT!” message
appears. Pressing ON after replacing batteries causes the Home Time screen
to appear. Set the current time and date you want.
• When battery power is low, the “LOW BAT!” message will appear after you
press ON, OFF, TEL, SCHEDULE, ANNIVERSARY, MEMO, TO DO,
CLOCK, CONVERSION, or CAL. If you continue to operate the unit without battery replacement, power will switch off automatically.
• The Daily Alarm, Schedule Alarm will not operate while battery power is low.

To adjust display contrast
1. Press FUNC to select CONTRAST, and then press ENTER.
2. Press J to increase contrast (making the figures on the display darker)
or H to decrease it (making the figures lighter).
3. Press TEL, SCHEDULE, ANNIVERSARY, MEMO, TO DO, CLOCK, CONVERSION, CAL, or ESC.

To select the system language (English, French, Spanish,
German, Italian, Portuguese)
1. Press TEL to enter the Telephone Directory Mode.
2. Press FUNC to select LANGUAGE, and then press ENTER.
3. Use K or L to select a language. Press ENTER when the language
you want to use is displayed.

Timekeeping Function
Each press of CLOCK changes between the Home Time, World Time 1,
World Time 2, and Alarm.

To change the World Time city
Use CLOCK to display the World Time and press FUNC to select TIMEZONE.
Then press ENTER and use K and L to scroll through the cities.
Month
City Code
Year

LON?
MON
2003 - 11 - 17
1 - 47 2 5 P

Day of the week
Date
AM/PM indicator

Time(HH-MM SS)
Press ENTER when the city you want to use is displayed.

E-5

To set the Home Time city
Example
City: HKG (Hong Kong)
Key Operation

Display

HOME
W ED
2003 - 1 - 1
12 - 05 20 A

CLOCK

FUNC ENTER
• Select TIMEZONE.

NYC?
WE D
2003 - 1 - 1
12 - 05 22 A

K/L
• Scroll through city names until HKG
appears.

HKG?
WE D
2003 - 1 - 1
1 - 0 5 23 P

ENTER

HOME
WE D
2003 - 1 - 1
1 - 0 5 24 P

To set the Home Time

Year

Month

HOME
WE D
2003 - 1 - 1
1 - 0 5 40 P

Day of the week
Date
AM/PM indicator

Time(HH-MM SS)
Example
Date: 2003-11-17 (November 17, 2003); Time: 9:45 AM
Key Operation
CLOCK

E-6

Display

HOME
W ED
2003 - 1 - 1
1 - 0 5 20 P

Key Operation

Display

HKG
_0 0 3 - 0 1 - 0 1
01 - 05
P

EDIT
20031117 AM/PM 0945
• Each press of AM/PM toggles between
AM (A) and PM (P). AM is indicated on the
display by “A”, while PM is indicated by “P”.

HKG
2003 - 11 - 17
09 - 4 _
A

ENTER
• This resets the seconds to 00.

HOME
MON
2003 - 11 - 17
9 - 4 5 00 A

• Be sure to input leading zeros when necessary.
• Use the following to specify noon and midnight.
Noon

Midnight

12-hour format

12 PM

12 AM

24-hour format

12

00

To switch between Standard Time and Daylight Saving Time
Press DST while your Home Time or the World Time is displayed to toggle
between Standard Time and Daylight Saving Time.
• You must make separate settings for Home Time and World Time.

HOME
MON
2003 - 11 - 17
10 - 4 5 10 A

DST indicator

To switch between 12-hour and 24-hour format
1. Display the Home Time or the World Time.
2. Press 12/24 to change between 12-hour and 24-hour timekeeping.

E-7

Alarm Function
• The alarm sounds for 20 seconds when the alarm time is reached.
• To stop the alarm when it is sounding, press any key.

To set the alarm time

ALARM T I ME

1 2 - 00
Alarm ON/OFF indicator

A
Current alarm time
setting

Example
8:05 PM
Key Operation

Display

ALARM T I ME
CLOCK CLOCK CLOCK

1 2 - 00

A

ALARM T I ME
EDIT

_2 - 0 0
0805 AM/PM
• Each press of AM/PM toggles between
AM (A) and PM (P). AM is indicated on
the display by “A”, while PM is indicated
by “P”.
ENTER
This causes the alarm indicator to appear.

E-8

A

ALARM T I ME

08 - 0 _

P

ALARM T I ME

8 - 05

P

To turn alarms on and off
1. Press FUNC to display the function menu.
2. Select “SOUND”, and then press ENTER.
3. Press K and L to change between displays as shown below, and H
and J to select “Д (on) or “×” (off).

DA I L Y A L M

J

J

(Daily Alarm Status)

KEY

J

J

(Key Input Tone Status)

SCHED A L M
(Schedule Alarm Status)
4. Press ENTER to return to the previous screen.

Inputting Characters
• You can input alpha-characters, numbers or symbols while the cursor is in
the top line of the display (text area). Only numbers can be input while the
cursor is in the second and third line (number area).
• Press CAPS to toggle the keyboard between upper-case and lower-case.
The “CAPS” indicator is on the display during upper-case input.
• To input a symbol, press SHIFT (so the “SHIFT” indicator is on the display)
and then press the key for the symbol you want to input. Press the SYMBOL button. Use K and L to display the symbol you want, and then
press the applicable number key to select the symbol and input it.
• To input a return, press B.
• To input a special character, press CODE so the “CODE” indicator is displayed. Next, press the key for the accent you want to input, and then
press the key for the character. This inputs the accent and character combination.
E-9

• While in the number area, press – to input a hyphen.
• To input a space, press SPACE.
• To change a character, use H and J to move the cursor and then input
the new character.

To input Telephone Directory data
• Name/Company: 72 characters; Home (Tel. No.):24 digits; Work (Tel No.)
24 digits; Fax number: 24 digits; Cell phone number: 24 digits; E-mail
address: 36 characters; URL: 36 characters; Address: 72 characters; Free:
64 characters
Example
NAME/COMPANY: CASIO
Home:045-012-3456; Work: 045-012-7890; Fax: 045-987-6543;
Cell Phone: 045-654-3210; e-mail address: abcd@xyz.com;
URL: www.casio.com
Key Operation

Display

NAME / C OMP ANY
TEL

CASIO ENTER

HOME?
_

045-012-3456 ENTER

WORK?
_

045-012-7890 ENTER

FAX?
_

045-987-6543 ENTER

CELL?
_

E-10

Key Operation

Display

E - MA I L ?
045-654-3210 ENTER

CAPS ABCD SHIFT
@XYZ.COM ENTER

WWW.CASIO.COM
ENTER

CAPS TOKYO SPACE
JAPAN ENTER

ENGINEER ENTER

URL?

ADDRESS ?

FREE?

CAS I O
045 - 01 2 - 3 45 6
0 4 5 - 0 1 2 - 7 89 0

• Data is automatically sorted into alphabetical sequence according to the
names.

To change the FILE NAME
1. Press TEL to display the initial Telephone Directory screen.
2. Press FUNC to select FILE NAME, and then press ENTER.
• FILE NAME can be up to 12 characters long.
3. After making the changes you want, press ENTER to store them.

To input Schedule data
• Up to 119 characters per data item.
Example
Meeting on December 5, 2003 from 2 PM
Key Operation

Display

DESCR I P T I ON?
SCHEDULE
E-11

Key Operation

Display

MEETING ENTER

DATE / T I ME ?
_0 0 3 - 1 1 - 1 7
1 2 - 05
A

20031205

DATE / T I ME ?
2003 - 1 2 - 0 5
_2 - 05
A

0200 AM/PM ENTER
• Each press of AM/PM toggles between
AM (A) and PM (P). AM is indicated on
the display by “A”, while PM is indicated
by “P”.
0130 ENTER
• If you do not want to set an alarm for the
appointment, press ENTER without
inputting a time.

SCHED A L M?

__- __

A

MEET I NG
2003 - 1 2 - 5
2 - 00
P

• Schedule data is sorted by date and time.
• This unit also has a Schedule Alarm, which you can turn on and off (see
“To turn alarms on and off” on page E-9). If the Schedule Alarm is turned
on, an alarm sounds when the current time reaches the start time of
Schedule Keeper data that comes first chronologically. Note that the details
of the Schedule Keeper data are displayed when the Schedule Alarm
sounds.

To input Anniversary data
• Up to 120 Character per data item.
Example
X MAS DAY 12-25
Key Operation

Display

DESCR I P T I ON?
ANNIVERSARY

E-12

Key Operation

Display

X MAS SPACE DAY ENTER

MM / DD?
01 - 01

1225 ENTER

XMAS D A Y
12 - 2 5

• Anniversary data is sorted by date.

To input Memo data
• Up to 120 characters per data item.
Example
JODY BDAY (Jody’s birthday), 10-5 (October 5)
Key Operation

Display

MEMO?
MEMO

JODY BD A Y _
JODY SPACE BDAY

JODY BD A Y
B 10-5 ENTER
• Memo data is not sorted.

E-13

To input To Do data
• Up to 119 characters per data item.
Example
CALL BILL, 11-6 (November 6)
Key Operation

Display

DO WHA T ?
TO DO

CALL SPACE BILL
(The check box appears automatically.)

ENTER
• The current date appears automatically.
20031106 ENTER
• Pressing ENTER again toggles the status of the check box between checked
and unchecked.

CALL B I L L _

WHEN?
2_ 0 0 3 - 0 1 - 0 1

CALL B I L L
2003 - 11 - 6

• To Do data is sorted from uncheck data to checked data by date.
DATE STAMP
To input the date, press SHIFT and then press CODE. The date stamp can
be used during text data input.

E-14

Recalling Data
The indicators K and L on the screen indicate that data exists above or
below the displayed data. Use K and L to scroll the screen and view the
other data.
• Indicators on the left side of the Telephone Directory screen show what
kind of data is currently displayed. The display indicators are: “HOME”
(home telephone), “WORK” (work telephone), “FAX” (fax number), “CELL”
(cell phone number), “E-mail” (e-mail number), and “ADD” (address).
• When scrolling Telephone Directory data, pressing ‘ first shows the name
entry along with the home and work telephone numbers. Each press of
K or L scrolls through the fax number, cell phone number, e-mail address
and other entries.

• Scroll Search
1. Use TEL, SCHEDULE, ANNIVERSARY, MEMO, or TO DO to enter the
mode (Telephone Directory, Schedule Keeper, Memo, To Do) that contains the data you want.
2. Use ‘ to scroll down, “ to scroll up. Hold down to scroll at high speed.

• Initial Character Search
1. Use TEL, SCHEDULE, ANNIVERSARY, MEMO, or TO DO to enter the
mode (Telephone Directory, Schedule Keeper, Memo, To Do) that contains
the data you want.
2. Input the initial characters of the data you want.
3. Press “ or ‘ to start the search.
4. If you get more than one, you can scroll.

Editing Data
To edit data
1. Recall data and press EDIT.
2. Input data as you normally would.
3. After inputting the data you want, press ENTER to store it.

E-15

Deleting Data
To delete a single item
1. Press “ or ‘ to recall an item.
2. Press FUNC to select ITEM DEL, and then press ENTER.
3. Press ENTER to delete the recalled item, or press ESC to abort.

To delete all data in a particular mode
1. Press TEL, SCHEDULE, ANNIVERSARY, MEMO, or TODO to enter the
mode that contains the data you want to delete.
2. Press FUNC to select ALL DEL, then press ENTER.
3. Press ENTER to delete all the data in the mode, or press ESC to abort.

Secret Memory Area
Important!
If you forget your password, you will have to RESET and delete everything in
memory!

To register a password
Example
Password: 0123
Key Operation

Display

NAME / C OMP A NY
TEL

NEW P A SS?
SECRET

____
0123 ENTER
• Your password can be up to 4 numbers long.

RE - TYPE

____
NAME / C OMP A NY

0123 ENTER
E-16

• Once you are in the secret memory area (indicated by C), you can input,
recall, edit, and delete data, and change between the Telephone Directory, Schedule Keeper, Memo and To Do just as you do in the normal
(non-secret) memory area.

To enter the secret memory area
1. While in the Telephone Directory, Schedule, Anniversary, Memo, or To
Do mode, press SECRET.
2. Input the current password and press ENTER. If the password is not
correct, the error message will appear on the display and then return to
password input step.

To exit the secret memory area
Press SECRET to exit the secret memory area.

To change the password
1. While in the Secret Memory area, press FUNC a number of times until
“PASS EDIT” is displayed.
2. Press ENTER.
3. Change to the new password and press ENTER to store.

Conversion Mode
Your Digital Diary has two conversion modes, one for currency conversion
and one for metric conversion.

To enter the Currency Conversion Mode
Key Operation

Display

CURRENC Y C ON
CONVERSION

USD ←→
ENTER

0

E-17

To enter the Metric Conversion Mode
Key Operation

Display

METR I C C ON
CONVERSION CONVERSION

02 y d ←→ m

ENTER

02 -

0

Using the Currency Conversion Mode
You can use the Currency Conversion Mode to convert between various
currencies. The calculator comes preset with the default currency names
listed below. You can use the default currency names as they are, or you can
change to other currency names. You can also change the exchange rate
whenever you want.
1.
2.
3.
4.
5.

USD ↔
USD ↔ JPY
C1 ↔ C2
C1 ↔ C3
C2 ↔ C3

Note
• Conversion No. 5 will be automatically set when No.3 & 4 have been registered. The currency name and exchange rate of No.5 are changed automatically.

E-18

To perform a currency conversion
Example 1
To convert $100 to euros.
Key Operation

Display

USD ←→
CONVERSION ENTER 100

10 0
J
• Press J or H to convert back.

USD

→

11 0

Example 2
To convert 100 to US dollars.
Key Operation

Display

USD ←→
CONVERSION ENTER 100
H
• Each press of H or J converts the displayed value.

1 10 0
USD ←

9 0 9 09 0 90 9

To change the currency name and rate
To setup a conversion from euros to pounds at a rate of 1.7125.
Key Operation

Display

USD ←→
CONVERSION ENTER

0

E-19

Key Operation

Display

EDIT SPACE SPACE SPACE £* ENTER
* To select the £ (pound) symbol, press the
SYMBOL button. Use K and L to
display the £ (pound) symbol, and then
press the applicable number key to
select it.
1.7125 ENTER
• This stores the input value in memory.

£ ←→

11
£ ←→

0

Note
• You can input up to five characters for the currency name and 10 digits for
the exchange rate.

Using the Metric Conversion Mode
All conversion values in the Metric Conversion Mode are preset as shown
below. You cannot change them.
Conversion

Displayed Units

Conversion Formula

yards ↔ meters
feet ↔ meters
inches ↔ centimeters
Kilometers ↔ miles
kilograms ↔ pounds
grams ↔ ounces
Celsius ↔ Fahrenheit
liters ↔ UK gallons
liters ↔ US gallons

yd : m
ft : m
in : cm
km : mi
kg : lb
g : oz
°C : °F
l : galUK
l : galUS

1 : 0.9144
1 : 0.3048
1 : 2.54
1.6093 : 1
0.4536: 1
28.35 : 1
1 : 1.8 * °C+32
4.546 : 1
3.785 : 1

E-20

To perform metric conversion
To convert 28 degrees Celsius to Fahrenheit
Key Operation

Display

y d ←→ m
CONVERSION CONVERSION ENTER

0
←→

Press L 6 times, then input 28
• Use K and L to search the desired
conversion.

28
→

J

82
←→

H

28
←

Press H again to convert °F to °C

– 22

Memory Capacity Screen
1. While in the Telephone Directory, Schedule, Anniversary, Memo, or To
Do mode, press FUNC to select MEMORY.
2. Press ENTER to display the memory capacity screen.

USED

%

8

Percentage of
memory used

• Press ESC to exit the memory capacity screen.
E-21

Calculator Mode
Press CAL to enter the Calculator Mode.

■ Calculation Examples
Examples

Operation

Display
a

53 + 123 − 63 =

963 × (23 − 56) =

0.

53q125 (Error) +
C123 +
w63u

125.
123.
113.

23w56e963u

− 31779.

(56 × 3 − 89) ÷ 5.2 + 63 = 56e3w89r5.2q63u

78.19230769

123456 × 741852 =

123456e741852u E 9.158608051
C
9.158608051
a
0.

2 × (−3) =
12 + 23 =
45 + 23 =

2e3;u
23qq12u K +
45u K +

−6.
35.
68.

7 − 5.6 =
2 − 5.6 =

5.6ww7u K −
2u K −

1.4
− 3.6

2.3 × 12 =
4.5 × 12 =

12ee2.3u K ×
4.5u K ×

27.6
54.

45 ÷ 9.6 =
78 ÷ 9.6 =

9.6rr45u K ÷
78u K ÷

4.6875
8.125

12% of 1500

1500e12t

180.

Percentage of 660
against 880

660r880t

75.

15% add-on of 2500

2500e15tq

2875.

25% discount of 3500

3500e25tw

2625.

E-22

What will the selling
price and profit be when
the purchasing price of
an item is $480 and the
profit rate to the selling
price is 25%?

480q25t
w

640.
160.
(Profit)

If you made $80 last week
and $100 this week, what
is the percent increase?

100w80t

25.

80 × 9 = 720
−) 50 × 6 = 300
20 × 3 = 60
480

a•80e9|
50e6}
20e3|
ª

M
M
M
M

720.
300.
60.
480.

About the Power Supply
Caution
• All data stored in memory is lost if you remove both batteries at the same
time.
• Replace the batteries at least once every 2 years, no matter how much
you use the unit.
• Be sure that you keep a separate copy of all important data that you store
in the unit.

To replace the batteries
1. Press OFF to switch power OFF.
2. Slide the battery compartment cover in the direction indicated by the arrow.

E-23

3. Slide the battery switch to the “REPLACE 1” setting.
Insert a thin, pointed object into (A) and remove the old battery.

(A)

Caution
Be sure to remove only one battery at a time. Otherwise, you will lose
all data stored in memory.
4. Replace the old battery with a new one, making sure that the positive (+)
side of the new battery is facing up (so you can see it).
5. Slide the battery switch to the “REPLACE 2” setting and repeat step 4
for the other battery.
• Be sure to load two new CR2032 batteries at the same time . Never mix an
old battery with a new one.
6. Slide the battery switch to the “LOCK” setting.
7. Replace the battery compartment cover.

Battery Precautions
• Keep + side of each battery facing up (so you can see it).
• Keep batteries out of the reach of small children. If swallowed, consult
with a physician immediately.
The batteries that come with this unit discharge slightly during shipment
and storage. Because of this, they may require replacement sooner than
the normal expected battery life.

E-24

Messages
Message

Remarks

BUSY...

• Data processing is being performed.

NOT FOUND!

• No data in memory matches your
specification.

PASS?

• Your operation requires entry into the
secret memory area. Input the password.

LOW BAT!

• Battery power is low. Replace the batteries.

E-25

World Time City Table
Time
Difference
– 11
– 10
– 09
– 08
– 07
– 06
– 05
– 04
– 03
– 02
– 01
+ 00
+ 01
+ 02

+ 03
+ 3:30
+ 04
+ 4:30
+ 05
+ 5:30
+ 06
+ 07
+ 08

+ 09
+ 9:30
+ 10
+ 11:00
+ 12:00
E-26

Code

City Name

HNL
ANC
LAX
SFO
DEN
MEX
NYC
LIM
CCS
RIO

HONOLULU
ANCHORAGE
LOS ANGELES
SAN FRANCISCO
DENVER
MEXICO CITY
NEW YORK
LIMA
CARACAS
RIO DE JANEIRO

LON
PAR
ROM
CAI
ATH
IST
MOW
THR
DXB
KBL
MLE
DEL
DAC
BKK
HKG
BJS
DPS
TYO
ADL
SYD
GUM
NOU
AKL

LONDON
PARIS
ROME
CAIRO
ATHENS
ISTANBUL
MOSCOW
TEHRAN
DUBAI
KABUL
MALE
DELHI
DHAKA
BANGKOK
HONG KONG
BEIJING
DENPASAR
TOKYO
ADELAIDE
SYDNEY
GUAM
NOUMEA
AUCKLAND

Other Cities in Zone

Seattle, Las Vegas
El Paso
Dallas, Houston, Chicago
Washington D.C., Boston,
Montreal
Santiago
Buenos Aires

Greenwich Mean Time
Madrid, Amsterdam
Helsinki, Beirut, Jerusalem

Kuwait, Nairobi
Abu Dhabi

Mumbai, Calcutta, Colombo
Jakarta, Hanoi
Taipei, Singapore, Manila

Seoul, Pyongyang
Darwin

Wellington

Storage Capacity
Telephone: 3,900 records under the following conditions
NAME/COMPANY: 10 characters
HOME: 10 digits
WORK: 10 digits
Schedule: 3,100 records under the following conditions
DESCRIPTION: 20 characters
Alarm: On
One appointment per day
Memo: 5,200 records under the following conditions
MEMO: 20 characters
To Do: 4,300 characters under the following conditions
DO WHAT: 20 characters
Anniversary: 4,600 records under the following conditions
DESCRIPTION: 20 characters

Specifications
Model: SF-3990
Memory capacity: 128 KB
Power supply: 2 lithium batteries (CR2032)
Power consumption: 0.02 W
Battery life:
Approximately 2 years under the following test conditions:
Unit turned on one hour each day.
Auto Power Off: Approximately 6 minutes after last key operation
Ambient temperature range: 0˚C~40˚C (32˚F~104˚F)
Dimensions: Folded: 13.9 (H) × 145 (W) × 91 (D) mm
(9/16 " (H) × 511/16 " (W) × 39/16 " (D))
Unfolded: 10.3 (H) × 145 (W) × 178 (D) mm
(3/8 " (H) × 511/16 " (W) × 7 " (D))
Weight: Approximately 120g (4.2 oz) including batteries

E-27

CASIO ELECTRONICS CO., LTD.
Unit 6, 1000 North Circular Road
London NW2 7JD, U.K.

CASIO COMPUTER CO., LTD.
6-2, Hon-machi 1-chome
Shibuya-ku, Tokyo 151-8543, Japan



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