The Products adopt electronic power supply with a water proof switch, likes the ice cube really, no chemical reaction, nonpoisonous and harmless, can be placed in each kind of drink to add mysterious atmosphere and romance. 12 to 25 hours battery life, or more, can be repeatedly used for many times. Batteries are Not replaceable. Widely used in all kinds of festival activities, which is the latest fashion champagne tower products. After the battery use up, Freezing them in your freezer and the non-toxic freezable gel inside the cubes will keep your drinks cool.