Anivia A8 Bluetooth Telephone Headset with Noise-cancelling Microphone(Black)

1. Receiving distance: 8-15 meters2. Microphone type: single-point silicon microphone3. Microphone sensitivity: 34db+/-3db4. Battery capacity: 250mah 3.7V5. Continuous working time: about 20 hours6. Charging time: 2 hours7. Static standby time: about 200 hours8. Speaker impedance: 32 ohms9. Speaker diameter: 30mm10. Speaker sensitivity: 111+/-3db11. Speaker output power: 15mw-30mw12. Frequency response: 20hz-20khz13. The earmuffs are soft and comfortable, and comfortable to wear14. The microphone can be rotated by 330 degrees15. Multiple noise reduction, clear call16. Multi-function buttons, easy to operate17. Point-touch charging base, easy to use, charging interface is Type-C