User's Manual
Plug in the charger to the headset.
When the battery is fully charged, the indicator light is turned to Blue.
It takes about 2 hours to fully recharge the battery.
Low battery indication
The headset will generate repeated warning beeps every 10 seconds.
The indicator blinks three times in Red.
As soon as you detect the low battery you should charge the headset.
When you hear the beep during a call, it’s better to transfer the call to
your mobile phone as soon as you can.