LED Luminous Transparent Crystal-thin Colorful Flash Bar Luminous Cup Mat Features: One-button-press the center button of the product to turn on the power to turn on the fast flashing, the second to flash slowly, the third to press the constant, and the fourth to turn off the power. for is suitable for the scene-it can meet your needs in different, such as any decoration for parties, weddings, cocktail parties, dinners, Christmas, Halloween, birthday parties, bonfire parties and night parties. Quality Assurance-Made of LED and acrylic, it has the characteristics of drop resistance, wear resistance and durability. Size: 3.92 inches in diameter, suitable for most cups, can hold cocktails, beer and various beverages without being corroded. Precautions for use-Do not wash directly, please clean with a damp cloth. Powered by 2 CR1620 batteries (included), these batteries can be used for more than 8 hours, which can meet your party needs. LED bar are amazing decorations and gifts, for bars, clubs, cocktail parties, etc.! Product details: Product information: Button: on/off, one-key Material: Acrylic Power supply: 2 x 1220 batteries (included) LED color: color (red/blue/green), cool white Including packaging： We provide 3PCS LED cup mats to choose from Precautions: 1. Do not clean the LED cup mat directly to avoid short circuit. 2. Do not put hot drinks on the LED cup mat.