High Quality Material: The LED coasters lights made of transparent acrylic+LED lamp beads, stronger and brighter than other coasters; Non-slip material, more stable. Surface water proof, but please don't put it in the water Charming Colorful LED Coaster: This LED coasters has 3 modes to choose, fast flash, slow flash and always lighting mode with 6 little LED beads and each flashing cup coaster has 2 CR1620 button batteries (installed in the product in advance), more brightness than the other coasters, bring the nice leisure feeling Widely Application: LED coasters for drinks which can make the clear containers such as wine bottle or wine glass become bright and colorful at once. Make the atmosphere of the party more enthusiastic. Suit for weddings, bar, Halloween, Christmas, squares, gardens. Your friend will surprise with this light up coasters How to use: Press the button of the bottle lights for liquor bottles, one click :fast flash; two clicks: slow flash; three clicks: always lighting mode; four clicks: turn the light off Package and Function: You will have LED drink coasters set of 2, this LED coasters for drinks, bottle lights for liquor bottles, light up coasters, flash cup coaster flashing shots light very perfect for party wedding kitchen dinning bar coasters