KUQIBAO Motorcycle Helmet Waterproof Bluetooth-compatible Headset With Screen 1. Waterproof: level 6 2. Bluetooth: 5.0 3. Charging voltage: USB 5V 4. Bluetooth distance: 20 meters 5. Horn specification: diameter 40mm 6. Tone-to-noise ratio: 80DB 7. Response frequency: 180-2000KHZ 8. Standby time: 180 hours 9. Working hours: 30 hours 10. Smooth communication and clear calls 11. Thick bass, CVC noise reduction 12. Smart buttons, easy to use, streamlined appearance, light and easy to wear 13. The front and rear of the coaxial two-unit speaker unit are combined to produce synchronous sound and clear sound quality 14. From the precise structure of the microphone to the meticulous design logic of the electronic signal, from the high-speed computing power of the DSP to the precise processing of the CVC software algorithm, it makes riding calls more pure and quiet, and the triple noise reduction processing of the microphone, DSP and CVC eliminates Surrounding noisy sound quality, making the voice of the call more pure 15. The battery capacity is 1500mAh, AL power management chip, strong battery life to meet the whole day of riding communication 16. LCD liquid crystal display Chinese voice prompt interface is intuitive and easy to operate 17. Voice control, short press to wake up the mobile phone voice assistant 18. Can connect two mobile phones at the same time, one bluetooth two mobile phones, intelligent connection, so that you can save the trouble of multiple earphones and multiple connections 19. Incoming calls will be prompted first and then automatically answered, or switched to manual answering. If you do not want to answer, press and hold the phone button for 2 seconds to reject the call 20. Power display, after the smart device is connected, turn on the phone to intelligently display the remaining power