Under Armour True Wireless Flash Review

  • -Under-Armour-True-Wireless-Flash
  • UA-True-Wireless-Flash-Headphones
  • Under-Armour-True-wireless-earbuds
  • Under-Armour-True-wireless-flash-by-JBL

Quick Points

  • Fit: In Ear
  • Enclosure: Closed Back
  • Connectivity: Wireless
  • Best For: iOS & Android
  • Noise Canceling: No
  • Microphone: Yes


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What Comes Inside The Box

  • UA True Wireless Flash Headphones
  • Charging Cable
  • 3 X Ear Tips, 3 X Wing Tips
  • Charging Case
  • UA True Wireless Flash Manual
  • Safety Guide, Warranty Card

Our Score

  • 7.8

Reasons Why You Should Buy Them

  • The Under Armor True Wireless Flash is a pair of well-sounding wireless sports headphones (result of JBL and Under Armour partnership) with a large and powerful bass, a well-balanced mid-range and, and a tight and crisp high-range to motivate you when you are running
  • Matte black color scheme with a small red accent and the silver Under Armour logo embellished on the outer panel feel premium and durable
  • Fully waterproof due to IPX7-rated, UA True Wireless Flash Headphones can be fully submerged in water for up to 30 minutes and 1 meter
  • Three different ear tips and three optional secure-fit ear fins help you find a comfortable and perfect fit
  • “Ambient Aware” mode is a small but practical feature if you need to keep an ear open for external announcements without taking off your headphones
  • TalkThru” technology reduces your music and amplifies speech so you can chat effortlessly with your training partner
  • Built-in controls and mic to answer calls, skip tracks, music play/pause, mute the microphone, select Ambient Aware or Talk-Through mode and connect with Siri or Google Assistant 
  • Brilliant sound isolation as three tips of different sizes help create the perfect seal that blocks most external sounds
  • The phone's audio is heard from both ears, which is a rarity in the case of true wireless in-ear headphones
  • Under Armour True Wireless Flash by JBL leak very little sound and don’t distract those around you even at high volumes
  • They can last up to 5 hours on a single charge and you get an additional 20 hours of juice with the charging case
  • Includes a $29.9 MapMyRun one-year premium membership to help track your workout plans, check sleep patterns and get nutritional tips

Reasons Why You Should Avoid Them

  • Not suitable for vocal-centric or relaxed music, these JBL UA True Wireless Flash are tuned for bass heavy music
  • When using headphones in a quiet room, the amplifier has a slight hiss. This may be the result of a lack of superior codecs like aptX
  • The case is about twice the size of the Apple AirPods charging case and not ideal to fit in your jean’s pockets
  • There is a slight delay when you press the center button and the change occur while playing or pausing the music
  • The Bluetooth connection is not very reliable. Connectivity stutters and occasionally jumps off tracks
  • There are no built-in controls to adjust volume levels and bounce back tracks from earphones, you have to pull out your music player for this
  • They support Bluetooth 4.2 instead of 5.0 and have quite a bit of latency while watching HD movies or playing games
  • You cannot connect UA True Wireless Flash Headphones to more than one device at a time, like other competitors' high end True wireless models
  • They don't have dedicated app support to control music playback, adjust volume levels or EQ adjustments for a personalized listening experience
  • Outdated micro USB charging port instead of the new USB Type-C means that you have to carry an additional cable while traveling
  • Need 2 hours to fully charge the JBL UA True Wireless Flash earphones, as there is no quick charge that can accumulate a workout's battery in just a few minutes
  • The headphones are quite large in size and protrude a bit from the ears compared to some other truly wireless models


  • The in-ear headphones feature Sport Flex Fit sports tips for a secure fit, even during rigorous training
  • The truly wireless design connects via Bluetooth 4.2
  • The JBL sound is tuned for sport to pump out rich bass to fuel your training
  • TalkThru technology reduces your music and amplifies speech so you can chat effortlessly with your training partner
  • Ambient Aware technology let you stay alert to your surroundings while enjoying your favorite playlist
  • IPX7 rating for sweat and water-proof durability
  • Lithium-ion battery provides 5 hours of listening time per charge
  • Aluminum charging case provides an additional 20 hours of playback time

The Specs That Matter


  • Headphone Fit : In Ear
  • Enclosure : Closed Back
  • Size In/Cm : 1.5 in (3.81 cm)
  • Weight Gm/Oz : 15 g (0.4 oz)
  • Foldable Design : No


  • Connectivity : Bluetooth
  • Connect Multiple Devices : No
  • On Device Controls : Call, Mute, Play/Pause, Skip Tracks, Ambient Mode, Talk Through On/Off, Voice Assistant
  • In Line Mic & Controls : No
  • Voice Assistant : Google Assistant + Siri
  • Companion App : No


  • Noise Cancelation Type : No
  • Sound Isolation : Yes
  • Echo Reduction : No
  • Sound Mode : Stereo


  • Waterproof : Yes
  • Heart Rate Monitor : No
  • Step Tracking : No


  • Battery Life : Up To 5 Hours (Up To 25 Hours With Charging Case)
  • Auto Pause & Play : No
  • Auto Shut-Off : No
  • Quick Charge : No

Technical Data

  • Driver Size : 5.8 mm
  • Driver Unit : Dynamic
  • Impedance (OHM) : 14 Ohm
  • Frequency Response : 20 Hz - 22000 Hz 
  • Sensitivity (dB/mW) : 95 dB/mW
  • Total Harmonic Distortion @ 90 dB : Less than 0.5%
  • Total Harmonic Distortion @ 100 dB : Less than 0.5%
  • Supported Codecs : AAC, SBC


  • Bluetooth Version : 4.2
  • Bluetooth Profiles : A2DP v1.3, AVRCP v1.5, HFP v1.6
  • Radio Frequency : 2.4 GHz
  • Wireless Range : Up To 10 m (33 ft)
  • NFC : No

Noise Canceling

  • Noise Canceling Adjustment : No
  • Noise Canceling ON/Off Switch : No
  • Atmospheric Pressure Optimizing : No
  • Ambient Sound Mode : Yes

Audio Cable

  • Audio Cable Length : N/A


  • Microphone Feature : On-baord 4 X Microphones


  • Battery : Rechargeable Lithium-Ion
  • Charge Time : 2 Hours
  • Charging Cable : Micro-USB Cable
  • Battery Indicator : Yes


  • Connection : Wireless
  • Audio : Yes
  • Microphone : Yes
  • Controls : Yes


  • Connection : Wireless
  • Audio : Yes
  • Microphone : Yes
  • Controls : Yes


  • Connection : Wireless
  • Audio : Yes
  • Microphone : Yes
  • Controls : Limited


  • Connection : No
  • Audio : No
  • Microphone : No
  • Controls : No


  • Connection : No
  • Audio : No
  • Microphone : No
  • Controls : No

TV & Home Theater

  • Connection : No
  • Audio : No
  • Microphone : No
  • Controls : No

User Manuals

Service & Support Info

  • Manufacturer's Warranty on Parts : 1 Year Limited Warranty
  • Manufacturer's Warranty on Labour : 1 Year Limited Warranty
  • Helpline : 1 (888) 727-6687
  • Contact : Click Here


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