Colorful LED Cocktail CoastersThe Ultra Fun LED coasters contain 6 lights with 3 vivid RGB colors of red, green & blue and with 3 light effects of fast flashing, slow flashing & always lighting. Ultra-cool LED drink coasters make your bottle stand out and creating a romantic & elegant space for you. Long Battery LifeEach light up coaster built-in 2 CR1620 button batteries, compared with CR1200 batteries, our batteries can last 8 hours to meet your needs at the party. If the batteries dont work anymore, just carefully tear off the sticker, take out the circuit board,then take out the old battery & replace it with a new one, finally attach stickers. Quality MaterialCompared to older versions on the market, KEROVI LED coasters for drinks are more waterproof & slip resistant. They are made of high quality PC material, which is more durable, safer & more environmentally friendly than coasters made of acrylic. Widely ApplicationThe round LED luminous coasters can meet your needs in different occasions, such as parties, dating, family gatherings, annual company meetings, KTV, bars, cafes, disco clubs, slow clubs, leisure clubs, clubs, parks, gardens, restaurants, etc. Is the perfect solution to boring places. PerfectGift ChoiceThe charming LED bar coaster - a must have for your indoor/outdoor drinking nights Is also a perfect Birthday gift option for your kids, family or friends, not only can they get 6PCS LED Coasters, they also get 6 CR1620 button batteries & 3 piece of replacement stickers.