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: 1H
6. Charging warehouse capacity: 300mAh
7. The best call distance: about 1M
8. Maximum transmission distance: about 10m
9. voice prompt support
10. Veter diameter: 10mm
11. Frequency response range: 20H-20KH
12. PX6 level waterproof/sweat-proof function
13. Sensitivity: 100.1db