



UA Sport Wireless Flex – Engineered by JBL
UA Sport Wireless Flex headphones deliver secure fit for sports and all-day comfort. Flex zones adjust to find the perfect fit no matter the activity. UA Sport Wireless Flex headphones drive your workouts thanks to their big, powerful JBL Charged Sound. And Bluetooth® wireless enables easy, cord-free connection. UA Flex headphones are sweat resistant with advanced nano coating. Stay safe after dark with the new RunSafe™ LED. A long-lasting 11-hour (max) battery features Speed Charge to deliver up to an hour of playback on just five minutes’ charge. Control music, volume, calls, mute and unmute the mic when you’re in a call, and even activate Siri® or Google Now™ with a long press.
Product Specifications
General Specifications
Driver size (mm) | 8.6 |
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Audio Specifications
Dynamic frequency response range (Hz) | 10Hz-22kHz |
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Number of drivers per ear | 1.0 |
Dimension Specifications
Headphone cable length (m) | 1.0 |
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Headphone cable length (cm) | 100.0 |
Headphone cable length (ft) | 3.3 |
Weight (g) | 21.0 |
Weight (oz) | 0.74 |
Control Connect Specifications
Bluetooth version | 4.1 |
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Bluetooth profiles | HFP v1.6, HSP v1.2, A2DP v1.2, AVRCP v1.5 |
Bluetooth frequency | 2.402GHz-2.48GHz |
Bluetooth transmitted modulation | GFSK,π/4DQPSK, 8DPSK |
Bluetooth transmitter power | <4 dbm |
Documents & Downloads
Spec Sheets
Quick Start Guide
Gallery







Videos
What’s in the Box
- 1 x Sport Wireless Flex In-Ear Sport Headphone
- 1 x Micro USB Cable
- 3 x Sizes of ear tips
- 1 x Winged and 1 x Wingless eat tip enhancer
- 1 x 12-Month MAPMYRUN Premium Membership
- 1 x Quick start guide
- 1 x Safety Sheet
- 1 x Warranty Card

FAQs & How-Tos
Does the UA Sport Wireless Flex feature volume control?
Yes. You have the ability to control the volume which is located on the RIGHT arm of the neckband.
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How do the neckband flex zones work?
You can bend the ‘arms’ of the neck in and out to get the optimum fit for your exercise/level of activity. The flex zone is the black rubber part on the neckband.
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How do I activate SIRI/Google Now on the UA Sport Wireless Flex?
Make sure the headphones are turned on and connected to your smart device. Press and hold the Microphone button located on the LEFT arm of the neckband. You should be able to activate Siri/Google within 3 seconds after pressing the Microphone button.
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UA Sport Flex Headphones: Track Information
To skip the track forward, press and hold the volume up button. (+) If you want to skip backward, press and hold the volume down (-) The volume buttons are located on the RIGHT arm of the neckband.
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How many ear tip sizes come inside the box of the UA Sport Wireless Flex?
The UA Sport Wireless Flex has size 3 (wingless) and the larger size 5 (winged). It also features three sizes of the small, medium, large inner ear tips. The unit comes with the size 5 Medium in ear tip on the unit out of the box.
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UA Sport Flex Headphones: Pairing Information
Press and hold the circle power button for 3-5 seconds. This will be located on the LEFT arm of the neckband. We recommend having one or both ear tips in your ear to listen to the audio commands. Continue to press and hold until you hear the audible voice stating, “powering on.” If this is your first time powering on the headphones it will automatically go into pairing mode in which you will hear the audio voice prompt stating “looking for device”. Make sure that the device you are attempting to connect to is in the Bluetooth search mode and within range. UA | JBL Flex should appear on your device within 3-8 seconds. Once you choose this option on your discoverable devices, it will connect and the voice prompt will state “Connected. “ To power off the headphones, press and hold the circle power button for 2-3 seconds or until you hear the audible voice state, “Powering Off”
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UA Sport Flex Headphones: Battery Life
The headphones feature a Speed Charge battery which allows you to receive a full hour of playback time after only charging the headphones for 5 minutes. To receive the full 12 hours of audio playback, it typically takes 1.5 hours of charging time.
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How does the LED light on the neckband of the UA Sport Wireless Flex work?
Press the microphone button (located on the LEFT arm) to turn on the first RunSafe mode. The first mode blinks continually. When you press the microphone again, the second mode is initiated which features 2 blinks on followed by 2 seconds without. Pressing the microphone again is the third mode which is 3 blinks on followed by 3 seconds without.
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Can the UA Sport Wireless Flex headphone be paired to multiple devices?
The UA Sport Wireless Flex can be paired to multiple devices but cannot connect to more than once device at a time.
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Is the UA Sport Wireless Flex sweat proof?
Yes, the UA Sport Wireless Flex has an IPX5+ rating which makes it resistant to sweat and moisture.
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