Customize your bicycle, motorbike or car with this LED light, it is the coolest way of making your vehicle the most eye-catching on the road. The LED Lights have super bright,Light Sensor to ensure that the light does not switch on during the daytime.Waterproof - The valve has a light mouth small waterproof caseSealed PackLength : 3 inchesPowered by 3pcs AG10 batteriesFit for bicycle, motorbike, cars