If you want to add that personal touch to your car bike - lighting is one of the best ways. This LED Bike Wheel Light fits most bicycles motorcycles and cars. LED Bike Wheel Light features motion sensors LEDs and replaceable batteries. LED lights will turn on when the vehicle is moving and off when the vehicle comes to a stop. Screws onto the valve stem of your car bicycle or motorcycle in seconds. Enhances safety by increasing visibility at night and during bad weather conditions. - Light color: blue - Movement sensor light up when wheels are spinning - Automatically turn off when staying still - Installs on standard tyre air stem valve of cars motorcycles or bicycles - Powered by 3 x AG10 batteries (included) - Comes with valve adapters