Model: WG-05 Color: Black,White Material:ABS Wireless Version:V5.3 Average battery life: ?8H BatteryCapacity: 130mAh Impedance: 16Ω Frequency Range: 20Hz~20kHz Rated Power: 3mW Driver Element:14mm Input:DC5V-180mA Stand-by Time: ?75H Time For Charging ?2.5H