1. Material: plastic
2. Weight: 450g
3. Channel: stereo
4. How to use: head-mounted
5. Frequency response range: 20-20000Hz
6. Bluetooth protocol: 5.0
7. Transmission distance: 10m
8. USB charging: DC 5V
9. Output power: 35MW
10. Features: 9D full range of sound effects, large speaker unit, Bluetooth 5.0, long battery life, active noise reduction, comfortable earmuffs, vowel reproduction, listening position, lightness and durability
11. Function Call function, voice control, support music
12. Charging time: about 2 hours
13. Listening time: about 24 hours