【CAT EYE Headlight Adapter】: By Using CAT EYE Headlight Adapter and Bike Computer Gopro Mount, it can save more space on Handlebar and can be provide higher security 【Compatibility】CAT EYE Headlight Adapter is compatible with CAT EYE Headlight Volt 800 Volt 700 Volt 1600 Volt 500 Volt 400 Volt 300 series 【Easy to Use】Easy to Install and Use, just slide CAT EYE Headlight in this adapter 【High Quality】This CAT EYE Rechargeable Headlight is Lightweight,just 4.4 g, easy for mounting. and also very durable 【5 Star Guarantee】 Best Tek CAT EYE Headlight Adapter, Black Color , 24-month warranty, and friendly customer service. Features: fit for computer mount (with gopro mount, connect your computer mount and the light ,it looks simple and beautiful.)