These lighted ice cubes are sure to impress with their ambient white still light color function. Their plastic covering is white. The cubes will activate when their two sensors (located on the bottom of the cubes) come into contact with liquid. They will deactivate once the sensors lose contact. Liquid Activated Mini Gel Cubes are also freezable so they'll not only look great, they'll keep your drink cool as well! Order yours today and don't forget about all of our different Liquid Activated Mini Gel Cubes sizes and colors! Disclaimer: This product is not suitable for children under 7 years of age. Batteries: Batteries for this product are NOT replaceable.