.Bluetooth specification:V5.3
2.Bluetooth Profile:A2DP,AVRCP,HFP, HSP
3.Working voltage:3.1V~4.2V
4.Charging voltage:5V-1A
5.Speaker specification：8mm*2
6.Frequency response:20Hz~20kHz
7.lmpedance:32Ω
8.Battery capacity of the headset: 50MAH
9.Battery capacity of the storage box:2000MAH
10.Transmission distance:>10M
11.Call Play time:About 4-6 h
12.Charging time of headset:1.5h
13.Charging time of the Charging box:2h
https://www.youtube.com/watch?v=MsOpsn1TG14
