Highlights... • Great for clubs, bars, and discos. • Change colors continuously. • Turns a boring old drink into a technicolor light fountain. Notes from Ankaka Customer Service • Do I have to use this as a beverage coaster? No. You can use it as a display for glass figurines too. Also if you put a diamond ring on it, watch your whole room explode with color. • How do I clean the coaster? You can clean the surface of the coaster with some warm water, but the underside should always be kept dry. Never submerge this unit in water.