The ice cubes made from high quality clear acrylic plastic,no chemical change, non-toxic harmless.
Each one comes with 7 colors blink and batteries already fitted (not replaceable).
Put the ice cube into the water (temperature can not be too high)or hold it by hand, it will automatically light up.once talking it out from water, please use cloth or tissue to dry the sensitive point for next use.
These Glow in the Dark Ice Cubes are perfect for vases, jugs and look great in clear water to add romance and mysterious.
Suitable for bars,wedding,fountain,aquarium,vases, bathtub,swimming pool lights,champagne tower and other holiday decoration.