Description : The disc is made of laminated foam core flat stable and slightly cushioned. Super bright 4 lights reflect and magnify neatly through transparent container and liquid. Easy to use. Just stick it on any ordinary bottle or water glass and click the button to open it. It can be a beautiful bottle decoration. Suitable for beverage ads bars nightclubs weddings events and parties. Note: 1. Due to the difference of light and screen the color of the item may be slightly different from the picture. 2. Due to manual measurement please allow 1-2 mm difference. Specification : Product Name: LED Cup Sticker Material: pcb+led+eva+sticker Battery: 2*CR1220 Size: 6cm Number of lights: 4 lights Light color: red blue green white colorful Usage: tear off the back tape stick it on any ordinary bottle or water glass and click the button to open it. includes: Choice 1: 1pcs x Coasters(with button battery ) Choice 2: 10pcs x Coasters(with button battery ) "