Features: 100 percent High quality. This kind of air wheel is vibrant, the wheel will turn bright and the color will be changed automatically. It will be very beautiful. There are waterproof rubber pads that can be screwed to the valve ports of the wheels. If you want to add that personal touch to your Car, Bike - lighting is one of the best ways. Can be applied in auto, car as well as bicycle. Make your car look so cool. Bring more enjoyment for your driving. Specification: Material: plastic and aluminum Power: use 3 AG10 button battery (product contains) Note: Used in the first time , need to remove the insulation paper on top of the battery to light ! As a result of manual measurement, please allow 1-3cm error. Due to the different lighting during the shooting,the picture color is slightly different from the actual product. Package content: 1x Bicycle lamp