Valve Caps with Lights,POSSBAY Air Valve Stem Wheel Tyre Neon LED Lamp for Car Motorcycle Bike Operates on 3 pieces of Button cell batteries (LR1130/AG10)(Included) Auto sensor turns lamp on when wheel is in motion .Increase night time and bad weather visibility Chrome body with Ultra Bright, Long life-span LED Lamp Durable, High Impact, Water and Rust resistant Installs on standard tyre air stem valve of cars, motocycles or bicycles.