1.Bluetooth specification:V5.32.Bluetooth Profile:A2DP,AVRCP,HFP, HSP3.Working voltage:3.1V~4.2V4.Charging voltage:5V-1A5.Speaker specification：8mm*26.Frequency response:20Hz~20kHz7.lmpedance:32Ω8.Battery capacity of the headset: 50MAH9.Battery capacity of the storage box:2000MAH10.Transmission distance:>10M11.Call Play time:About 4-6 h12.Charging time of headset:1.5h13.Charging time of the Charging box:2h

https://www.youtube.com/watch?v=MsOpsn1TG14