1. Bluetooth V5.2

2.Transmission Distance:>10m

3. Profile support:HSP HFP A2DP AVRCP

4. Earphone battery: 3.6V/ 2*50mAh    

5. Charging case battery: 3.7V/500mAh

6. Charging time:>1.5H

7.Playing time: 8 hours