Features: LED Flashing Lights: These coasters feature vibrant led flashing lights that create a dynamic and captivating atmosphere, ideal for enhancing the ambiance of any club, bar, or party. Waterproof and Non-Slip Design: The waterproof and non-slip construction of these coasters ensures that they can be used with confidence, providing a secure surface for drinks while also being easy to clean and maintain. Versatile and Non-Toxic: Crafted in a round shape, these luminous mats are non-toxic and suitable for use with a variety of beverage containers, including wine bottles, beer, and cups, making them perfect for any party, wedding, bar, or club setting. Glowing Coaster Lights: With four lights that emit a radiant glow, these coasters are a striking and functional addition to any ktv or bar, adding to the overall atmosphere and providing a unique touch to beverage presentation. Premium Party Supplies: These led coasters are the ultimate party and bar accessory, elevating the experience with their eye-catching design and practical features, making them a must-have for any social gathering or event. Note: 1. Due to the difference of light and screen, the color of the item may be slightly different from the picture. 2. Due to manual measurement, please allow 1-2 mm difference. Specification: Product Name: LED Cup Sticker Material: pcb+led+eva+sticker Battery: 2*CR1220 Size: 6cm Number of lights: 4 lights Light color: red, blue, green, white, colorful Usage: tear off the back tape, stick it on any ordinary bottle or water glass and click the button to open it. Include: Choice 1-5: 1*Coasters(with battery ) OR Choice 6-10: 10pcs*Coasters(with battery )