Featuresr consists of 32pcs colorful ledsr light with 42 gorgeous and cool flower patterns shining by turnsr equipped with light sensor and movement sensor flash only in the dark and actionr pattern is clear and complete when speed is up to 20kmhr fix on spokes of bike with three rotary boltsr powered by three aaa batteries not includedr water resistant design can be used in rainr easy installation and quick releaser r note r the wheel light can be used in rain but can not be soak