The LED fluorescent ice cubes with built-in light sensors automatically illuminate in dark situations and when they come into contact with water or ice, making them perfect for creating a magical atmosphere. Powered by safe, chemical-free batteries, these reusable cubes offer various lighting options, including quick flashing, slow flashing, and continuous light in multiple colors. Ideal for bars, weddings, and parties, these cubes enhance any event with their beautiful, vibrant lights.