Samsung WEP750 Quick Start Manual page 8

2 When the headset is fully charged, the indicator light changes to
blue. Unplug the charger from the power outlet and the headset.
• Use only a Samsung-approved travel adapter. Unauthorized adapters
may cause an explosion or damage to the headset.
• The battery will gradually wear out while charging or discharging
because it is a consumable part.
• The headset is not able to operate while charging. Try connecting after
charging is completed.
When the battery is low
The headset beeps and the indicator light flashes red. Recharge
the battery. If the headsets powers off during a call, the call will be
automatically transferred to the phone.