Green Light Up LED Ice Cubes are a cool green addition to any special event. Add them to office parties, birthdays, New Year's Eve and St. Patricks day to create the ultimate party! Add these bright glowing cubes to your guest's glasses, and suddenly you’ve kicked the party into high gear! Flashing ice cubes can be added to centerpieces, vases, punch bowls or water fountains to light them up with brilliant green color! These glowing ice cubes come fully assembled with batteries pre-installed - just push the button and watch the glowing ice cubes light up! The duration of the lighted ice cubes is 24 hours for the flashing setting and 12 hours on the steady light setting. You can be sure that your light up ice cubes will last all night long!