- Battery: rechargeable Polymer Lithium-Ion Battery, DC:
3.7V/290mAh - Power: USB DC5V, Please use the USB cable sealed with our
headphone for charging - Charging Time: For first time use please be sure the battery has
been charged fully before use. It needs more than 4 hours of
charging the first time, then 2-3 hours for recharging - When the red light is on, the headphone is in charge mode.
The red light will turn off when the battery is fully charged.