These LED Bike Wheel Lights are easy to install. Screws onto the stem of your , or motorcycle in seconds. They fit most bicycles, motorcycles and cars. Colorful LED lights will flash when you're driving at night for safety and visibility. Features - Color: As Shown - Material: Plastic - Size: 7 x 4 x 1.5cm - Installed on nearly all bicycles, such as foldable bike, road bike, mountain bike and so on. High brightness lights keep your safe in low light conditions, perfect for night cycling. - IPX5 waterproof design, No longer worried about the bike wheel lights will be damaged when riding in rainy days, AAA Battery powered lights, suitable for all kinds of weathers, When the bike stop, the wheel lights will be off automatically, convenient and energy saving! - Made of 14 pieces double-sided led lamp beads, changing a pattern every 4 seconds, 30 different patterns in total. Different speed, this bike wheel lights will have different effect show and have an Manual button. - Easy To Install, Don't need any other tool, only need several seconds, this bike wheel lights can be installed safely. When the come and take, ! Package list: 1 x Bike Wheel Light