1、Made of food grade PS material and electronic components, high quality, safe to use and non-toxic. 2、The sensing part is sensitive, and it will light up when meeting water, reliable, waterproof and leakage proof. 3、It is widely used in all kinds of festive events, such as wedding party, birthday party, hotel, bar and so on. 4、Waterproof grade 7, no chemical changes, harmless and can be placed in various cold drinks, convenient to use. 5、The product is battery-powered and can be placed in various beverages to add a romantic and mysterious feeling. ----------------------- Condition: 100% Brand New Item Type: LED Ice Cubes Material: Food Grade PS + Electronic Components Battery: Built-in 3 x Button Battery 42mAh Continuous Luminous Time: 8-25 Hours Brightness: Super Bright On-off Mode: Liquid induction, it will light when touching water How to Use: Put the luminous ice cubes into the water, it will shine automatically. Applicable: Suitable for bar, wedding, KTV, birthday party, add cheerful feeling Color: Colorful Quick Flash, Green, Pink, Yellow, Blue, Red, White, Colorful Slow Flash (optional) Product Size: Approx. 2.7 x 2.7 x 2.7 cm / 1.1 x 1.1 x 1.1 in Weight: Approx. 210g / 7.4oz Tips: 1\. The drink is still drinkable if you put ice cubes in it, but you can't place the ice cubes in overheated drinks. 2\. The battery is not replaceable. 3\. When not in use, wipe dry the sensor, the light will not light, which can extend the service life. 4\. After taking out the ice cubes from the liquid, pressing it with your hand will light up. ----------------------- 12 x LED Ice Cubes