RayShop - Super Bright Blue Flashing LED Tire Light (2-Pack) When your wheels start to move, they automatically flash light up creating a solid disk of light that appears to hover above your wheels. When you stop they will switch off to save battery power. Make your Bike/Car/Motorbike looks beautiful. Increases nighttime and bad weather visibility for safety Bring more engjoyment to your drive. Please note the light change colors automatically, powered by button batteries, included Notice:Please pull out the plastic cover from cells before use it . Bike Car Truck Motorcycle led daylight Tyre light auto Wheel light Tire Valve Caps Covers Neon LED Sensor Lights Lamps