Bess e3 light is not on.

You can enter the camera first to check whether the flash is turned on and whether the flashlight can be used normally.

The most likely reason for this situation is that the Bluetooth battery in the after-sales outlets of the Bluetooth brand has been damaged. Let me help you check whether to repair or replace the battery.

It may not light up because the pairing is unsuccessful. Headphones can be paired again.