1. Bluetooth version: V5.2
2. Transmission distance: about 10 meters
3. Chip: Jerry 6976
4. Battery capacity: 90mAh
5. Charging time: about 1h
6. Use time: about 10-12h
7. Charging interface: USB
8. Voltage: 3.7V
9. Frequency: 20Hz-20KHz
10. Impedance: 32 ohms
11. Sensitivity: 85dB
12. Waterproof rating: IPX5
13. Weight: about 10.9g

Features:
1. LED power display, clear power usage at any time
2. Built-in CVC noise reduction technology, effectively shield the surrounding environment noise, reduce interference during calls
3. USB charging interface, convenient and quick
4. Not into the ear design, comfortable and safe to wear
5. Key operation, convenient and quick