1. Flexible and retractable unidirectional microphone design, pick up sound clearly
2. Built-in intelligent ENC noise reduction chip, LED lighting
3. Soft protein earmuffs, adjustable head beam, comfortable to wear
4. Built-in high-power speakers, 7.1 surround sound
5. Transmission range: 10 meters
6. Mic sensitivity: -42dB
7. How to use: head-mounted
8. Impedance: 20 ohms
9. Sensitivity: 115dB
10. Frequency response: 20-20000Hz
11. Power supply mode: USB charging / built-in lithium battery
12. Battery capacity: 1200mah
13. Working hours: about 10 hours
14. Charging time: about 2 hours
15. Charging voltage: DC 5V
16. Rated power: 5W
17. Rated current: 1A
18. Packing list: earphone+3.5mm audio cable+Type-c charging cable+USB transmitter+storage bag+packing box
19. Weight: about 550g
