Add a touch of color and ambiance to your bar with our Round Gravity Sensor LED Coaster for Bar Cocktail. Made with high-quality ABS+PP material, this coaster features gravity sensor technology that illuminates the LED lights when a glass is placed on top. With its stunning color-changing effect, this LED coaster is perfect for setting the mood and creating a unique atmosphere. It comes in two styles: battery-operated (three AAA batteries required, not included) or USB rechargeable (built-in polymer battery with USB charging cable included). The battery-operated version has a runtime of 20-30 hours depending on the quality of batteries used, while the USB rechargeable version can run for approximately 10 hours on a single 30-minute charge. Add this stylish and functional LED coaster to your bar collection and impress your guests with its stunning visuals and practical use. Order now and take your bar to the next level! Style: dry battery type/shipment not included, USB rechargeable type Weight: 65g, 90g Color: black shell white light, black shell colorful, white shell white light, white shell colorful Lighting color: white light, colorful Shell color: white, black Material: ABS+PP Quantity: 2pcs*round gravity sensor luminous coaster