Product Name: LED Bike Wheel Lights Shell characteristics: ABS, waterproof Working time: 20 hours (constant light) Product features: super bright, low energy consumption, no riding speed requirements, automatic manual switch. Size: about 0.4-0.5MM in diameter Waterproof level: IP65 Material: ABS Plastic+LED Color: Red, Blue, Green Powered by 3 AA batteries (included) The LED spoke light is the perfect way to increase your visibility, safety, and cool factor when you're riding your bike in the dark. water and shock resistant, it fits almost all kids' and adults' bike sizes. Features ALL-IN-ONE SPOKE LIGHT SET EASY TO INSTALL WATER RESISTANT SAFETY WATER RESISTANT These led spoke lights are designed with sphere cover for water resitance, you don't need to worry about riding in the rainy day EASY TO INSTALL This bike wheel light is designed with 2 slots, just press one slot onto the wheel and then pull the bicycle spoke lit to the top rightly.Try to rotate the wheel and make sure it is firmly, and for 100% no falling off, you can tie it with the coming straps KEEP SAFE AT NIGHT The bike warning lights are perfect for night safty riding, with amazing colorful LED lights, it is so great for both cool and safety, suitable for all kind of the Φ2mm spokes bikes Easy to Install the light to your spokes: Flip your bicycle upside-down so that your wheels are easy to access. Place the battery container mount against the center hub of the wheel and connect the zip ties one at a time. Attach the battery to bike's hub: The battery attaches to your hub to reduce the rotational weight of the light. Wrap the cable: Wrap the cable tight around your spoke.Plug in the light. Now it's time to ride and enjoy the light show! ALL-IN-ONE BIKE SPOKE LIGHT: This wheel spoke lightset contains 3 colour light ( green, red, blue), and 3 piece battery, perfect for your safety and bike decoration at night EASY TO INSTALL: This bike wheel light is designed with 2 slots, just press one slot onto the wheel and then pull the bicycle spokelit to the top rightly.Try to rotate the wheel and make sure it is firmly, and for 100% no falling off, you can tie it with the coming straps WATER RESISTANT: There led spoke lights are designed with sphere cover for water resitance, you need not worry about riding in the rainy day PERFECT GIFTS! Our super cool bike lights come in a full-colour gift box with long-lasting batteries included. Extremely popular Christmas gifts and stocking stuffers. Fun birthday presents all year long for men or women, girls and boys of all ages. SAFETY GURANTEE: The bike warning lights are perfect for night safty riding, with amazing colorful LED lights blinking, it is so great for both cool and safety, suitable for all kind of the Φ2mm spokes bikes