Product name: induction luminous ice cubes Battery model: 3*AG3 button battery Product size: 2.6*2.6*2.7cm Product material: food grade PS+LED light Duration: about 8 hours Product shape: square 1. Material: food grade material + LED light 2. Switch mode: liquid induction, light up when touched by water 3. How to use: Put the light-emitting ice cubes into the water cleanly, it will automatically shine; after use, wipe it dry with a cloth and place it in a dry place for next use. 4.12pcs, single color is long light mode, RGB is blinking mode. 5. It can be placed in all kinds of drinks to add a romantic and mysterious atmosphere. Widely used in various festive events or hotel bars and other places