1. GET LIGHT: Does your party need some color? Get the party started with these LED water-activated ice cubes that light up in any cold drink. They look fun inside the drink! The party cube decorations add a unique atmosphere to any occasion. 2. COLORFUL CUBES: Each cube can change to 7 different colors within seconds. The cubes have a battery life of up to 30 hours. 3. LIQUID SENSOR: The sensor is located on the bottom of the ice cubes and lights up when it detects liquid. The liquid-activated color-changing LED ice cube lights stop lighting up when dry. 4. FOOD GRADE: These reusable LED drink cubes are made of food-safe polystyrene plastic and can be safely used with food or drink. Waterproof and submersible in liquids, making it a fun way to enhance drinks. (Note: Do not put in hot liquid). Size: 3.6 x 3.6 x 3.6 cm 5. IDEAL FOR DECORATION: Perfect for Christmas parties, nightclubs, bars, karaoke parties, music events, weddings, pool lighting, champagne towers, and other holiday decorations.