​1.Model:M90 pro

2.Bluetooth specification:V5.2

3.Bluetooth Profile:A2DP,AVRCP, HFP, HSP

4.Working voltage:3.1V~4.2V

5.Charging voltage:5V-1A

6.Battery capacity of the headset: 40MAH

7.Battery capacity of the storage box:1200MAH

8.Transmission distance:>10M

9.Call time : About 4-5 hours

10.Play time : About 4-5 hours

11.Charging time of headset:1h

12.Charging time of the Charging box:2h

13.Support system : All Bluetooth devices and mobile phones