Color Black Brand N/A Model N/A Material Cashmere Quantity 1 Piece Shade Of Color Black Bluetooth Version V3.0 Operating Range 10M Other Features 1. Bluetooth V3.0+EDR compatible with most devices with Bluetooth function. 2. Knitted material fashionable and keep you warm while you answer the phone in cold weather. 3. Washable 4. Built-in MIC 5. Built-in rechargeable battery 6. Frequency: 2.402GHz-2.480GHz 7. Transmission distance of MIC: ≤1 M 8. Li-ion Battery: 3.7V/100mAh 9. Charging time: 2 hours 10. Standby time: 6~8 hours 11. Continuous working time: Approx. 3.5 hours Packing List 1 x Hat 1 x USB data cable (65cm) 1 x English user manual