1. Blinking Shoe light powered by 1 PCS of CR2032 3V battery. 2. There are 4 red LED light on it. 3. The Length is 2.7cm. Height is 2.2cm. Thickness is 0.7cm. 4. Waterproof. 5. When you put this kind of light on the cloth, Shoes, Bag, PVC decoration can make your proudcts moreattractive. It flash through movement sense. 100pcs/tray. 2000pcs/ctn. CTN Size:41.5*37*27.5cm. G.W.:13kgs.