Bluetooth Version: V2.0
Material:Steel+Plastic
Cell Type: Li-ion Battery 502530
Capacity: 300mAh
Charging Time：1H
Working Time：3H
Stand-by Time: 300H
Operation distance: 10M
Frenquency: 20Hz-10KHz
Sensitivity:100dB
Impedance:32*2Ω
Support：Can be connect with any device by bluetooth
