awei T69 Air Conduction Sport TWS Bluetooth Earbuds(Black)

1. Bluetooth version: V5.3 Jerry AC6973D42. Support protocols: HSP, HFP, A2DP, AVRCP3. Battery capacity: 110mAh (with protective board)4. Charging compartment battery capacity: 300mAh (with protective board)5. Driver unit: Diameter 16mm/16 ohm6. Charging time 1.5H7. Call duration 17H8. Play time: 16H9. Standby time: 200H10. Speaker sensitivity 123+/-3dB11. Speaker impedance: 16 ohms12. Input charging standard: DC 5V13. Bluetooth working frequency: 2.402G-2.480G14. Frequency response range: 20-20K Hz15. Transmission distance: Up to 15M16. Voice prompt: Supported17. Multipoint connection: Not supported18. Wearing method: Earhook type19. Instructions: Chinese and English20. Interface: TYPE-C21. Waterproof level: IPX6