1. Bluetooth chip: JL6976
2. Bluetooth version: 5.1+edr
3. Bluetooth protocol: HFP, HSP, A2DP, AVRCP
4. Transmission distance: 10m
5. Battery capacity (charging case)600MAH
6. Battery capacity (single earphone) 50MAH
8. Earbud Charging time: < 2h,Case charging<4h
9. Charge port: Type C
10, Standby time: 120h
11. Speaker impedance: 16 ohm
12. Waterproof grade: IPX5
13. Battery life Display+Button Control
14. Color:Black.