Featuresr 211 led with four colors purple blue green and redr light with 12 gorgeous and cool flower patterns shining by turnsr built in light sensor and movement sensor flash only in the dark and actionr powered by lr44 button cellr only red led on indicating low batteryr water proof design can be used in rainr easy installation just simply screw on to your tire valver r note 1 the wheel light can be used in rain but can not be soaked in the waterr 2 pay attention to the po