[PACKING INCLUDE]30 pcs White Drink Coaster (LED Light Color: 30 x White).Each light up coaster has 2 CR1220 button batteries (installed in the product in advance). Our batteries for led stickers can last over 12 hours to meet your needs at the party. Tips: if the light not work,please try to check if the insulation part being taken out or adjust the place of battery or contact us to confirm the problem,and you can replace the battery by yourself. [PREMIUM MATERIAL]light up coasters are made of laminated foam core board,the discs are flat,stable,and slightly cushioned.Each led coaster has 4 Ultra-High Brightness LED lights, which can make the clear containers such as wine bottle,wine glass,champagne,liquor bottles become bright at once. [EASY TO OPERATE]Take out the insulating sheet and tear off the sticker on the , stick the LED coaster to any normal bottle or drinking glass,and the ON/OFF button, you can see light up bottles or led drinking glasses immediately. There are 3 modes to choose from: rapid flash, slow flash and steady mode. [WIDE APPLICATION]The led coaster lights 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. bottle led lights for liquor bottles are sure to please you! [QUALITY SERVICE]led coaster lights for bottles, a must have for your indoor/outdoor drinking nights! We know you'll love our coaster light, our led bottle lights color: White Material: EVA size: 6cm Package Contents: 30*LED Coaster Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.