Product Details:

1.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:>10-20M 

11.Call Play time:About 4-6 h

12.Charging time of headset:1.5h

13.Charging time of the Charging box:2h