Communication: Bluetooth
Colour: Black, White, Gold, Silver Bluetooth Version: 2.1 Frequency: 2.4 G Hz-2.48 G Hz Transmitting Power: Ciass 2 Bluetooth Chip: ISSCOperating Range: 10m Working Voltage: 3.8 V Battery: 85m A Standby Time: 100 hours Talk Time: 6 hours Charge Time: 3 hours