JBL Tune Flex
|Driver size (mm)||12|
|Driver sensitivity at 1kHz/1mW (dB)||110|
|Dynamic frequency response range (Hz)||20 Hz – 20 kHz|
|Charging Case Weight (oz)||1.4|
|Earpiece Weight (oz)||0.3|
|Charging Case Weight (g)||38.6|
|Earpiece Weight (g)||9.6|
Control Connect Specifications
|Bluetooth profiles||A2DP V1.3, AVRCP V1.6, HFP V1.7|
|Bluetooth frequency||2.4 GHz - 2.4835 GHz|
|Bluetooth transmitted modulation||GFSK, π/4-DQPSK, 8DPSK|
|Bluetooth transmitter power||<11 dBm|
Documents & Downloads
Quick Start Guide
What’s in the Box
- 1 x JBL Tune Flex headphones
- 1 x Charging case
- 1 x USB Type-C charging cable
- 1 x open eartip
- 1 x 3 sizes of sealing eartips
- 1 x Warranty / Warning (W / !)
- 1 x Quick Start Guide / Safety Sheet (S / i)
FAQs & How-Tos
Software Update Release Notes
Software Version: V3.1.0 (global)
Release Date: September 14, 2022
Release Media: OTA (over the air) via JBL Headphone App
- Improved the connectivity between left and right earbud.
- ANC (active noise cancelling) can be activated more quickly.
- Optimized the APP user experience for better flow.
If you have charging problems, the first step is to always clean all contact points, on each earbud and on the charging case.
You will need: cotton cloth or makeup swab, cotton swabs and rubbing alcohol. Also a pencil with eraser for further cleaning.
Use a cotton swab with some rubbing alcohol to clean the charging terminals of the headphones. Rotate the swab and scrub lightly on each contact surface, then use a cotton cloth to remove any dust and cotton residue left on the headphones. It is important to perform this process periodically to keep your headphones clean, thus avoiding affecting the charging speed/quality.
Wipe the contact pins in the charging case with a clean cotton swab. The swab can be slightly moistened with rubbing alcohol, but it is important that the interior is completely dry before closing the box. Use the cotton cloth and wait for it to dry.
Repeat until the contact points are visibly clean, and charging should work as designed.
Try cleaning the contacts with the tip of a pencil and the eraser at the end of the pencil, the graphite and rubber can help to re-establish charging also.
This procedure can be performed on all TWS earphones and cases.
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