1. Bluetooth version: V5.3 Jerry AD6973D4
2. Support protocols: HSP, HFP, A2DP, AVRCP
3. Battery capacity: 110mAh (battery without protection board, headphone board lithium battery protection IC)
4. Charging compartment battery capacity: 450mAh (with protective board)
5. Charging time: 2.0H
6. Call time: 9H
7. Play time: 10H
8. Standby time: 300H
9. Speaker specifications: Diameter 16mm/20 ohm
10. Sensitivity: 93+/-3
11. Impedance: 20 ohms
12. Transmission distance: Up to 10M
13. Voice prompt: Support
14. Multipoint connection: Not supported
15. Wearing method: Earhook type
16. Interface: TYPE-C
17. IPX6-level strong waterproof and sweat-proof function (only for headphones, the charging case is not waterproof)
18. The charging box has a digital display for the battery level. The earphones have a large battery capacity and have a long standby time. They do not fit into the ears and are air-conducted. They do not compress the ear holes and are comfortable to wear.