1. Ergonomic design, no pain to wear for a long time
2. Soft earmuffs, adjustable head beam
3. Smart Noise Cancelling Microphone
4. Impedance: 32 ohms
5. Charging time: about 1.5 hours
6. Playing time: about 57 hours
7. Battery capacity: about 500mah
8. Power supply mode: USB charging / built-in lithium battery
9. Frequency response: 20-20000Hz
10. Rated current: 1A
11. Rated power: 5W
12. Charging voltage: DC 5V
13. How to use: head-mounted
14. Sound principle: moving coil
15. Sensitivity: 114dB