1. IP66-level structure waterproof: high-standard IP66-level structure waterproof, soaking in water not affect normal use. 2. Built-in high-capacity battery, ultra-long standby time: 1500 mAh battery provides with intelligent power management system, and the low-power electronic devices greatly improve the use time, no more frequent charging troubles, 2 hours fast charging provides 1000 hours of battery life. 3. Powerful 5.0 chip: Bluetooth 5.0 chip, stable performance and quality, low energy consumption, and long battery life. 4. Automatic answering calls, riding: automatic answering and manual answering calls are optional, you do not need to take out your mobile phone to answer the call. You can choose to automatically answer the call after caller ID voice prompt or just manually answer the call. and hold the phone function key for 3 seconds to reject the incoming call. Bluetooth version: 5.0 Transmission distance: 1000m Fast charging time: 1-2 hours Waterproof level: IP66 Applicable scene: suitable for motorcycle helmet Colour:Black Material:ABS Package Contents: 1pcs x headset 1pcs x base 1set x pasting tools 1pcs x charging cable 1pcs x microphone 1pcs x 32G memory card 1pcs x English instruction manual 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.