JBL UA True Wireless Flash Spec Sheet English
JBL_UA_True_Wireless_Flash_Spec_Sheet_English Under Armour® True Wireless Flash – Engineered by JBL® | True wireless earphone for your every run, with JBL technology and sound
User Manual: JBL Under Armour® True Wireless Flash – Engineered by JBL® | True wireless earphone for your every run, with JBL technology and sound
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Wireless freedom to push yourself further.  
UA True Wireless Flash offers a truly cord-free experience to push yourself further. The UA  
waterproof technology and Sport Flex Fit ear tips were crafted specifically for all condition 
training while the JBL Charged Sound was boldly optimized and tuned for motivation. Hear your 
surroundings with Bionic Hearing featuring TalkThru Technology to quickly interact with your 
workout partner, and AmbientAware Technology to hear your surroundings for increased safety. 
With a total of 25 hours battery life and a durable aluminum charging case, these headphones 
truly break the limits.
Features
Truly Wireless for Sport
Waterproof, High-Performance Design  
for Sport   
Bionic Hearing
JBL Charged Sound
25 Hours of total battery life
Bluetooth® wireless
Sport Flex Fit ear tips 
Aluminum Charging case
Under Armour® True Wireless Flash – Engineered by JBL®
Truly wireless sport headphones for your every run, with JBL technology and sound

HARMAN International Industries, Incorporated
8500 Balboa Boulevard, Northridge, CA 91329 USA
www.jbl.com
© 2018 HARMAN International Industries, Incorporated. All rights reserved. JBL is a trademark of HARMAN International 
Industries, Incorporated, registered in the United States and/or other countries. © 2018 Under Armour, Inc. All rights 
reserved. Under Armour and the UA logo are trademarks of Under Armour, Inc. The Bluetooth
®
 word mark and logos 
are registered trademarks owned by the Bluetooth SIG, Inc. and any use of such marks by HARMAN International 
Industries, Incorporated is under license. Other trademarks and trade names are those of their respective owners.
Features, specifications and appearance are subject to change without notice.
Features and Benefits 
Truly Wireless for Sport
Cord-free design enables athletes to maximize each and every workout.
Waterproof, High-Performance Design for Sport
IPX7 Sweat & Waterproof, these buds promise to withstand your most rigorous workout and any 
elements thrown your way.
Bionic Hearing
Using unique JBL sound and mic technology, Bionic Hearing allows you to hear your 
surroundings with two sound Technologies – TalkThru & Ambient Aware. With TalkThru 
Technology, music is lowered and speech is amplified so you can easily chat with a workout 
partner between sets. AmbientAware delivers a more immersive music experience while 
increasing ambient sounds, providing the safety of hearing your surroundings.
JBL Charged Sound
Bold sound tuned for sport with rich bass to crush your workout.
25 Hours of total battery life
Battery life can last for 5-hours per charge, but no need for concern if you’re on-the-go. Simply 
recharge your earphones for another 20-hours playtime with the water-resistant, aluminum 
charging case. 
Bluetooth® wireless
Easy-to-connect Bluetooth technology delivers a cable-free, zero-distraction performance.
Sport Flex Fit ear tips 
Winged ear tips that are easy to use for maximum security.
Aluminum Charging case
Featuring a sleek, aluminum sliding design, the charging case has a fabric cord and ensures 
your headphones are recharged quickly and safely.
What’s in the box:
1 x True Wireless Flash in-ear sport headphone 
1 x Protective sport charging case
1 x Quick start guide 
1 x Safety sheet 
1 x Warranty card 
12-Month MapMyRun™ Premium membership
3 Sizes of ear tips
3 Sized of winged ear tip enhancers
Technical Specifications:
   Transducers: JBL 5.8mm dynamic drivers 
and four JBL microphones
   Frequency response: 20Hz–22kHz
   Sensitivity: 95dB@ 1kHz/1mW
   Maximum SPL: 113dB
   Microphone sensitivity: -25dBV@1kHz/Pa
   Impedance: 14 ohm
   Bluetooth transmitted power: <9.5dBm
   Bluetooth version and profiles: 4.2,  
A2DP v1.3, AVRCP v1.5, HFP v1.6
   Bluetooth transmitted frequency and power: 
2.402GHz–2.48GHz, <9.5dBm
   Bluetooth transmitted modulation:  
GFSK, π/4 DQPSK, 8-DPSK
   Battery type: rechargeable lithium-ion  
(3.7V 2 x 110mAH)
   Battery life: Up to 5 hours
   Battery charge time: 2 hours from empty
   Charging case battery type: Rechargeable 
Li-Ion (1500 mAh)
   Charging case battery life: Up to 20 hours
   Charging case charge time: 2 hours from 
empty
   Connector: Micro USB charge
   Included: charging cable, ear fit tips:  
S, M, L caps (M installed), S, M, L Freebit 
winged tips (M installed)
   Weight:  15g
Under Armour® True Wireless Flash – Engineered by JBL®
Truly wireless sport headphones for your every run, with JBL technology and sound