Thank you for your review. We're here to help. Here's some helpful information:
1. Our JBL Tune Flex's Active Noise Cancellation (ANC) is optimized for general ambient sounds (e.g., commute, office) and may be less effective in very high-decibel, industrial environments.
2. The unit is IPX4 rated (splash and sweat-resistant for workouts), but heavy rain can impact performance. For any issues arising after rain exposure, including sound or touch sensor problems, a factory reset is often effective.
3. For optimal bass, first use the "Check My Best Fit" feature in the JBL Headphones App to ensure correct ear tip size and positioning. If bass issues persist, consider your audio source quality, EQ settings, or the source device. For intermittent bass, try adjusting your EQ or checking app/service settings. If bass is consistently lacking, toggle your EQ (on/off or boost), test with a different device, or perform a factory reset as a last resort.
4. Factory resetting the unit:
• With both earbuds on, and not charging, tap two times and hold the button on the third tap for more than 5 seconds. Finally, place the earbuds back into the charging case to complete the process.
• You may need to 'forget' the headphones in Bluetooth settings on your phone/tablet in order to pair them again.
5. For charging case connection issues, cleaning the contact points on the earbuds and charging case usually resolves them. Please head to https://support.jbl.com/us/en/howto/true-wireless-headphones-cleaning-instructions-for-re-establishing-charging-us/000016909.html
Your unit is covered by a one-year standard warranty. For further assistance, please contact us.

We appreciate your review. We're here to help. Our JBL Tune Flex's Active Noise Cancellation (ANC) is optimized for general ambient sounds (e.g., commute, office), and may be less effective in very high-decibel, industrial environments. Regarding rain exposure, the unit is IPX4 rated, meaning it's resistant to splashes and sweat (suitable for workouts), but heavy rain can sometimes impact performance. For touch sensor, and sound quality issues, please factory reset the unit: With both earbuds on, and not charging, tap two times and hold the button on the third tap for more than 5 seconds. Finally, place the earbuds back into the charging case to complete the process.
You may need to 'forget' the headphones in Bluetooth settings on your phone/tablet in order to pair them again.
For charging case connection issues, cleaning the contact points on the earbuds and charging case usually resolves them. Please head to https://support.jbl.com/us/en/howto/true-wireless-headphones-cleaning-instructions-for-re-establishing-charging-us/000016909.html
For further assistance, please contact us.

Thanks for your feedback. In order for our JBL Tune Flex to give you the best audio response, you must create a tight seal within your ear canal. To achieve the best seal and secure fit, try to angle the ear tip slightly downward to make it easier to insert into your ear canal, then gently twist the earbud to fit it securely into the shape of your ear. It is best to try this with all of the provided sealing ear tip sizes until you find the one that accomplishes this most easily. If you need further assistance, please contact us.