Headphones BT WK M8 Black

Bluetooth version: V5.0 Bluetooth frequency: 2400MHZ-2500MHZ Impedance: -32ohm Rechargeable battery capacity: 200mAh Play time: 3-4 hours Talk time: 3-4 hours Standby time: 80 hours Charging time: 2-3 hours Power input: 5V-1A Material: ABS + PC Sensitivity:122dB Frequency Response Range:8-24000Hz Support Memory Card:Yes Fm radio mode