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.
