4pcs Waterproof Led Wheel Light

Size: Approx. 6.3 x 1.8 x 1.8cm/ 2.5 x 0.7 x 0.7 inch (LxWxH) Type: Tire Led Lights Batteries: 3x AG10 Button Batteries(included) Waterproof: IP68 These LED Bike Wheel Lights are easy to install and remove; they fit most bicycles, motorcycles and cars. LED Bike Wheel Light features motion sensors, LEDs and replaceable batteries. The light will be off when the vehicle stops, on when it runs, and flash when you’re driving at night. Screws onto the valve stem of your car, bicycle or motorcycle in seconds. Package included: 4pcs. Steps: 1. Unscre the product. 2. Remove the gasket inside. 3. Put Led Wheel Light on the bike Valve.  Installation finish. It will light up when your car/bike/truck is driving or vibrating.