Bluetooth version: V5.0

Support Agreement: HFP/HSP/AVRCP/A2DP

Transmission distance: 10meters

Built-in rechargeable Battery: 35mAh x 2

Charging box: 300mAh 

Driver Diameter: 10mm

Talk time: 3H

Music play time: 3H

Charging Time for the earphone:about 1 hours                                                    

Charging Time for the charging case:about 1.5 hours

Sensitivity:98dB+/-5dB

Frequency Range: 20Hz -20KHz