1. Install it on the handlebar of the motorcycle with a pipe diameter of 22-25mm. You can put a non-slip pad on the handlebar before installation. 2. Suitable for most motorcycles, such as retro motorcycles, etc. 3. With night vision function, you can see the dial clearly at night. 4. Material: aluminum alloy 5. Battery type: LR626 button battery 7. Waterproof grade: IP67
