General description These CSPARKV LED Light Up Coasters are a fun and vibrant addition to any gathering. With 6 dynamic LED colors and multiple lighting modes, they create an engaging atmosphere for parties, weddings, bars, and more. Technical specifications Material: High-quality acrylic Battery type: Replaceable CR1220 Battery life: 10-15 hours (depending on flash mode) Installation To replace the battery, peel off the sticker on the bottom of the coaster, replace the two button batteries, and reapply the sticker. Usage Activate the coasters with a simple one-second press. Choose from multiple lighting modes: flashing, slow flashing, and steady glow. Ideal for various events including weddings, parties, and bar gatherings.