Light sensor:glowinthedark The LED fluorescent ice with built-in light sensor can illuminate in dark situation. Beautiful light:glowinthedark There are different types of LED fluorescent ice with different light color,including colorful slow flashing,red color,white color,blue color and pink color. Safe:glowinthedark The LED fluorescent ice is powered by the battery without any chemical reaction,safe and reliable to use. Automatic:glowinthedark The LED fluorescent ice automatically illuminate when it touch water or ice. Scope of application:glowinthedark The LED fluorescent ice is widely used in bar,wedding,party and so on,to build romantic atmosphere.