Our 12-pack of Liquid Activated Green LED Ice Cubes do not have the usual on and off buttons but are liquid activated! As soon as you place them into a drink of your choice they will light up and create a fun look for any party theme. Our Green Liquid Activated Ice Cubes look great as water decorations in Water-based Centerpieces, too. Perfect for St. Patrick's Day or any time green meets your color scheme. Water-activated light-up cubes stay lit up in solid colors only and are reusable, and may last up to 12 hours. Our Green Liquid Activated LED Ice Cubes come in a pack of 12 cubes. Batteries are included and installed but cannot be replaced.