Specifications: Tire valve cap lights screw onto the valve stem of your car, bicycles or motorcycle in seconds. Universal fitment and easy to install no special wires, can be easily installed and removed. Fits most valves of road, mountain bicycles, motorcycles and cars. Bright LED will turn on while the vehicle is moving and off when stop. Car lights increase night-time and bad weather visibility for safety riding. Type: Tire Valve Light Quantity: 2 Pcs Material: High Quality Plastic Applicable: for Bike, Motor, Car, etc Function: Automotive Trim, Warning Light, Safety Powered by: 3 x AG10 Batteries (Included) Size: 7cm x 1.7cm x 1.7cm/2.76" x 0.67" x 0.67" (Approx.) Notes: Fit for woods/Dunlop valve, Schrader valve, but not for Presta valve. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 2 x Tire Valve Lights