1. Stylish and cool appearance design, built-in high-quality Bluetooth chip, let music surround your life and enjoy the feast of music. 2. Hands-free function, truly freeing your hands, you can ride safely, and you don't need to lift your phone to make calls, which is 3. Built-in rechargeable lithium-ion battery, long standby time, long working time, low battery voice alarm, easy to know when to charge. 4. New waterproof structure design 5. Using the new Bluetooth 5.0 Bluetooth technology, transmission, low power consumption, with automatic answering function, you can also manually answer and reject calls, safe and fast, built-in high-quality anti-interference microphone, can effectively achieve hands-free answering and hang up. High-fidelity sound effects, supports previous and next song switching functions, volume increase and decrease, playback pause, automatic callback and other functions, easy to operate. 6.This helmet Bluetooth headset is carefully designed by the designer based on the internal structure of the full-face and half-face motorcycle helmet. It uses 5.0 Bluetooth technology, has stronger signal transmission, lower power consumption, supports most Bluetooth devices, and supports the automatic answering function. , you no longer have to answer the phone manually when calling, it is safe and fast. Bluetooth version: V5.0 Supported protocols: A2DP and ACRCP Charging voltage/current: DV 5V Frequency: 2.402-2.480GHz Use time: 10 hours Usage distance: 10 meters (transmission distance varies due to environmental factors and mobile phone Bluetooth devices) MIC distance: 1 meter Charging time: 2-3 hours Colour:black Material:ABS Package Contents: 1 x Host 1 x Charging cable 1 x English manual 1 x Horn sticker 1 x Host cker Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.