Product Categories：Bluetooth Headphone

SPECIFICATION：                        

Driver diameter: 40MM

Driver impedance: 20Ω

Battery capacity: 1000mAh

Duration time: ≥12hours

Charging time: 3hours

Working voltage: 3.7V 

Microphone sensitivity:-42DB+3dB

Charging voltage: DC5V = 550mAh

Transmission distance;10meters

Directionality: Omni-directional