SpecificationMaterial: AcrylicColor:as the pictureSize: thickness 4mm*diameter 10cmBattery model: two CR1620 button batteries (battery included)Uses: Bars, restaurants, KTV, weddings, parties, etc.description:Wiring-free / long battery life / no leakageUltra-thin and durable, transparent and shining, light and thin, light transmission is very good, dazzling gleamingFeatures: One-button switch, full body waterproof, anti-leakage protection, energy-saving and power-savingStrong abrasion resistance, strong and durable, long-lasting colorWhole body waterproof design: tight waterproof design, non-leakage acrylic material, safe and environmentally friendlyHow to replace the electronics:1. Gently tear off the sticker on one side and take out the circuit board (be careful not to damage the button);2. Take a sharp object and pull out the electronics from the side of the battery clip;3. Load new electronics from the side of the battery clip;4. Reset the sticker (or replace with a new sticker).Package quantity: 1*led transparent acrylic luminous coaster