Description 3 types of switches: full light, fast flash, flash Power: CR2032 batteries (included). Light colour: red, blue, green, multi-coloured. Product colour: white. Size: 3.5 x 12.8 cm. Package contents: 4 piece bicycle cycling spoke wire tyre wheel LED bright lamp. Be seen when cycling, this LED light is the perfect solution for night time safety when cycling. High quality, small, lightweight, durable. Specially designed for the professional rider or recreational cyclist. Easy to use, durable and safe. Easy to install and unlock. Durable and water resistant. Waterproof, shockproof. Fashion design: Four different lighting colours so you can mix or adjust them as you like. After switching on, the light flashes automatically. EASY TO INSTALL: No need to disassemble your bike light, mount directly on your spoke wheels, slide towards the rim until it is tight, and it will stay securely in place. No tools required. Good stability: Securely in position, even during off-road use, the upward positioning of the spoke light keeps the balance. Suitable for most bicycles, such as children's bikes, folding bikes, road bikes, mountain bikes, etc.