Amazon Hot Sale Winter Beanie Bluetooth Hat

Transmission distance: 10M / 32.80ft

Transmission distance of Mic: ≤1M / 3.28ft

Frequency response：85db

Li-ion battery: 3.7V/200mA

Charging time: 2 hours

Number of charge: > 1000 times

Charging voltage: DC 5V

Standby time: 30 hours or so

Continuous working time: about 5 hours

Bluetooth name: Call me