White 5" LED Illumination Disc Drink Coaster (4x pcs set)

LED Bottle Light Sticker. Material:PCB board+LED lamp+battery+3M plastic+EVA foam. Product color:white. Size:Diameter of 6CM,thickness 0.3CM Three Light Settings:steady mode,rapid flashing or slow flashing Simple to use: Stick them to any clear glass, bottle, and jar or stick to the bottom and then press the power button Ultra-thin design, It is only 3mm Ideal for parties, holidays, birthdays, festivals, promotional events or by the pool!