So magic: Imagine holding a drink in your hand,where the rocks light up the glass with many colorful lights! It will impress your friends at the party by putting these LED Rocks in their cocktails! They are big and bright and last a long time. Rainbow mode, plus other 8 different solid colors. 15 to 20 hours battery life, or more. Batteries are not replaceable. Filled with freezable jell that makes it the real ice cube alike. Color:show as pictures,Random color dispatched. Package include: 1 x Water Submersible Ice Cubes Please note: 1> niceeshop(TM) is a registered trademark and the only authorized seller of niceeshop branded products. 2> niceeshop provide you various kinds of great products at the lowest possible prices, welcome to our store and get what you want !!! 3> niceeshop highly appriciate all customers" opinions to improve the selling ,also if anything you unsatisfied, pls contact our customer service department for probable best solution.