


Under Armour® True Wireless Flash – Engineered by JBL®
Product Specifications
General Specifications
Bluetooth version | 4.2 |
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Ear tip material | Silicone |
Driver size (mm) | 5.8 |
Audio Specifications
Driver sensitivity at 1kHz/1mW (dB) | 95dB |
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Dynamic frequency response range (Hz) | 20Hz-22kHz |
Impedance (ohms) | 14.0 |
Number of drivers per ear | 1.0 |
Dimension Specifications
Weight (g) | 16 |
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Weight (oz) | 0.56 |
Control Connect Specifications
Bluetooth profiles | A2DP V1.3, AVRCP V1.5, HFP V1.6 |
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Bluetooth frequency | 2.402GHz - 2.48GHz |
Bluetooth transmitted modulation | GFSK, π/4DQPSK, 8DPSK |
Bluetooth transmitter power | <9.5 dbm |
Documents & Downloads
Spec Sheets
Quick Start Guide
Gallery










Videos
What’s in the Box
- 1 x True Wireless Flash in-ear sport headphone
- 1 x Protective sport charging case
- 1 x Micro USB cable
- 3 x Sizes of ear tips
- 3 x Sized of winged ear tip enhancers
- 1 x 12-Month MapMyRun Premium membership
- 1 x Quick start guide
- 1 x Safety sheet
- 1 x Warranty card

FAQs & How-Tos
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Waterproof Information (IPX7)
This unit is IPX7 rated, which means that you can submerge the unit in water as deep as 3 feet (1 meter) for up to 30 minutes.
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Charging Information
To charge the headphones, place inside charging case. While charging, both LEFT and RIGHT ear bud will display a sold red light. Once the headphones are fully charged. The red light will turn OFF. When the charging case is fully charged, the white LED's will light up accordingly. Battery life can last for 10-hours per charge. You may recharge your earphones for another 40-hours playtime with the charging case. It takes 2 hours to fully charge the charing case.Was this helpful? Thank you for your feedback!
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Voice Assist Information
To activate the voice assistance, press and hold the center button on the RIGHT ear for 2 seconds until you hear your music stop. You will be able to speak to VA through your headphones and it should comply with your command.
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Is Volume Control Supported?
This headphone does not feature volume control. You must manually control volume from your device.
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Playback Time Information
When fully charged, you should expect to receive up to 10 hours of audio playback. You should receive up to 40 hours in the charging case when case is fully charged.Was this helpful? Thank you for your feedback!
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Pairing Information
To power on and pair the headphones, remove the ear tips from the charging case. If this is your first time using the headphones, they will automatically go into pairing mode. You will see the blue and red LED light flash on the RIGHT and LEFT ear as it attempts to pair with your device. Make sure your device is in range and BT settings are ON. The JBL True Wireless Flash X should pop up on your list of discoverable devices within 3-5 seconds, tap and connect. Once connected, you will see a slow blinking blue light below the UA logo on the RIGHT and LEFT Ear. This headphone allows you to use the ear tips in Stereo or Mono mode. If you wish to just use the LEFT or RIGHT ear, simply place the ear tip you do not wish to use back in the charging case.Was this helpful? Thank you for your feedback!
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Track Control
To pause/play music, tap center button on right or left ear for 1 second. To skip tracks forward, DOUBLE CLICK the center button on right or left ear. Unfortunately, you cannot skip tracks backward.Was this helpful? Thank you for your feedback!
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Manually Connecting
The Left and Right bud should sync together automatically when removed from the case. If the Left and Right bud do not sync together automatically within 15 seconds, you may manually sync the buds together. With the buds out of the case, press the center button on each bud 3x. This action does not have to be done simultaneously. You may start with either the L or R bud to initiate syncing.Was this helpful? Thank you for your feedback!
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Fit and Sizing
Try all Flex Fit Ear fins included (S/M/L) to find a snug fit for stability during workout. Usually the biggest size that fits comfortably in your ear will provide the most stability. Try all ear tip sizes (S/M/L) to find a snug seal for optimum sound quality, and look for a balance of comfort and acoustic sealing.Was this helpful? Thank you for your feedback!
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Call Information
To take a phone call, tap the center button of the right or left ear for 1 second. To hang up a call, tap and hold the center button for 1 second. To ignore a call, tap and hold center button for 3 seconds until music resumes. You may also use the ear buds in MONO or STEREO mode which allows you to make a call or listen to music on either bud independently.Was this helpful? Thank you for your feedback!
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TalkThru Technology
To activate TalkThru Technology, press the LEFT ear for a short press for 1 Second which allows you to clearly hear others for quick conversations without removing headphons. Music volume level should lower when TalkThru is engaged. Press again for 1 second to turn off Talk Thru.
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