1. Optimum silicone material, protein earmuffs, comfortable and stable to wear, FM function
2. 40mm dynamic drive unit, strong bass
3. Lightweight and durable, clear calls, long battery life
4. Hands-free calling, built-in microphone for wireless calling
5. Bluetooth 5.0 chip, fast connection, stable transmission, stable signal
6. Channel: Stereo
7. Function: battery display, call function, support music, multi-point connection
8. Sensitivity: 118dB
9. Frequency response: 20-20000Hz
10. Battery capacity: 400mah
11. Power supply mode: USB charging / built-in lithium battery
12. Transmission range: 10 meters
13. How to use: head-mounted
14. Use time: 8-10 hours
15. Impedance: 32 ohms
16. Rated power: 5W
17. Rated current: 1A
18. Charging voltage: DC 5V