Features: brand new and high quality LED fluorescent ice with built-in light sensor can glow in the dark. LED fluorescent ice automatically glows when it comes in contact with water or ice. Widely used in all kinds of festive activities or hotel bars and other places. Continuous glow time: 8-25 hours. LED fluorescent ice is powered by battery, no chemical reaction occurs, and it is safe and reliable to use. Drinking water with ice cubes is drinkable, but drinks that are too hot cannot be added. The battery cannot be replaced. After you take the ice cubes out of the liquid, it will light up when you hold it down with your hand. Perfect for Christmas parties, night clubs, bars, karaoke parties, music events, weddings, swimming pool lights, champagne towers and other holiday decorations. Specifications: Material:PS+Electronic Components Size:Approx.2.7x2.6x2.7cm/1.06x1.02x1.06in Color:7 Colors/Green/Pink/Yellow/Blue/Red/White Package Includes: 12 Pieces Led Ice Cubes note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.