Specifications 

Driver Diameter  40MM

Bluetooth version    5.3

Bluetooth Solution    JL7006

Frequency Response    20Hz-20000Hz

Battery Voltage    5V±0.5V

Playing Time    22H (ANC mode)

Charging Time    2H

Distance    10M

Largest Power    5mW

Sensitivity    110±3db

Battery Capacity    300mAh

Impedance    32 Ohm