1. Bluetooth version: V5.3 Jayli AD6973D4
2. Support protocol: HSP, HFP, A2DP, AVRCP
3. Call time: 7H
4. Playing time: 6H
5. Charging time: 1.5H
6. Charging warehouse capacity: 300mAh
7. Capital battery capacity: 35mAh
8. The best call distance: about 1m
9. Maximum transmission distance: about 10m
10. Support voice prompt
11. Sensitivity: 94db
12. Veter diameter: 10mm
13. Frequency response range: 20H-20KH
14. PX6 level waterproof/sweat-proof function
15. DNS call noise reduction