ZITRADES Patent product 2x Colorful Car Bike Tyre Valve Caps LED Lights with Aluminium material cap by ZITRADES Automatic change color Wheel Light, one light can automatic change to different color Uniquely design, make your car, bike more stylish Auto turn off either the enough brightness or stopping wheels running Powered by 3 AG10 button cell batteries (included) Light color: colorful Built-in light sensor. Only light up and flash in darkness and wheels running