Features: Made of food grade PS material and electronic components, it will light when touching water. Beautiful shape and appearance, great for adding a romantic and mysterious atmosphere for your party. Powered by button cell, no harm, safe and reliable, waterproof and leak proof, can be placed in a variety of drinks. Easy to use, clean the ice cube and then put it into the water, it will automatically light up when touching water. Widely used in all kinds of festive events, wedding, party, hotel, bar and more. Specification: Condition: 100% Brand New Material: Food Grade PS + Electronic Components Luminous Time: 15-30 hours Brightness: super bright Battery: 3 * 1.5V AG3 button cell (Included) Color: 7 Colors Flash Mode: liquid sensor, it will light when touching water Shape: Heart-shaped, Diamond-shaped (optional) Size: (optional) Heart-shaped Ice Cube: Approx. 3.7*3.4*2.7 cm / 1.5*1.3*1.1 in Diamond-shaped Ice Cube: Approx. 3.8*3.8*2.7 cm / 1.5*1.5*1.1 in Weight: Approx. 233g-256g Package list: 12pcs * LED Ice Cubes (Battery Included) Note: 1. Do not swallow. 2. Avoid placing it in overheated drinks. 3. After use, dry with a cloth and place in a dry place for next use. 4. The drink is still drinkable if you put ice cube in it, but you can't place the ice cube in overheated drinks. The battery is not replaceable. After you take the ice cube out of the liquid, please dry it as soon as possible, so that it will stop emitting light. 5. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.