Featuresr consists of 14pcs colorful ledsr light with 30 different gorgeous patterns shining by turns and changing every 4 secondsr pattern is clear and complete when speed is up to 20kmhr equipped with light sensor and movement sensor flash only in the dark and actionr powered by 2 cr1632 batteryr water resistant design can be used in rainr easy installation and quick releaser r noter the bike wheel spoke light can be used in rain but can not be soaked in the water for long time