LED Coasters for Drinks Material: Acrylic LED Quantity: 6 LED for one coaster LED Color: Colorful (Red/blue/green) , Cool white Power: 2 * CR1620 batteries Dimenstion of LED Coasters: 10*4cm Package dimension: 10.8*10.6*3cm Round LED Coasters -- Each coaster features 6 LED beads and offers a choice between Colorful LED or Cool white LED options. ON/OFF Button & 3 Lighting Modes -- The coasters have an ON/OFF button and offer 3 lighting modes: One Touch for quick flashing, Twice Touch for slow flashing, and Triple Touch for constant lighting. Acrylic Coasters -- These coasters are made of durable Acrylic material. The battery panel is embedded in the LED coaster panel, so avoid washing them directly. Instead, clean them with a wet duster cloth. They are also environmentally friendly. Daily Waterproof -- Do not wash the LED coasters directly to prevent electrocution. The coasters are powered by 2 * CR1620 batteries, which can be a little tricky to replace. start by ripping off the white sticker. and the acrylic panel can recycling using. Widely Application -- These coasters are suitable for decoration at parties, weddings, bars, Halloween, Christmas, home pubs, and for both indoor and outdoor use.