Features a liquid induction function, automatically turns on when submerged in water. These amazing LED ice cubes are completely waterproof. They are designed to be used in drinks and create a surprising effect. Cannot be frozen. LED lights up automatically if put in water. Ideal for wedding, party, birthday party or holiday celebrations. Not recommended for liquids that need to be consumed. Can be placed in all kinds of liquids to create a mysterious and romantic atmosphere. Product description: Tip: you can put them in your glass or water, but the temperature cannot be too high; Battery is non-replaceable; Continuous lighting time about 8-25 hours. Use medium: After cleaning the ice, water or glass, it will automatically light up, after use, clean with a cloth then place in a dry place for the next use. These lights will add a sparkle when added to your vases, display jugs and look great in clear wine coolers. They can be used to enhance displays at home for parties, weddings and others events. These smart little LED lights illuminate when you put them in a liquid. Not recommended for use in liquids that must be consumed. The LEDs turn on automatically when placed in water and go off when you take them out! Not suitable for children. Specifications: Weight : 201g Color:Multicolor Size: 26 x 26 x 27mm Battery life: 10-20 hours Material: PS + electronic components Package contains: 12 * LED light ice cube