1. Bluetooth Version: V4.2

2. Supported Profile: HFP,HSP ,AVRCP and A2DP,AAC

3. Earphone Battery: 50mAh*2 rechargeable  Lithium battery

4. Working Range: 10M

5. Talk Time: 3 hours

6. Playing Time: 2.5 hours

7. Earphone Charging Time: 1 hour

8. Speaker Size: 6mm

9. Battery: 50mAh

10. Maximum Power: 15MW

11. Frequency: 20-20K HZ

12. Impedance: 16 ohm

13. Sensitivity: 91db±3db

14. Earphone Size: 17x23x27mm

15. Weight: 4.5g

Charging Box Specification 

1. Charging Box Battery: 650mAh

2. Charging Box Charging Time: 2.5 hours

3. Size: 52x58x33mm