Features 1、Luminous: This cup is specially designed to be bright when entering water, the standard is 6 colors, cool lights are very beautiful. 2、Long Life: This LED champagne glass has a built in button battery, which can be continuously lit for more than 24H and has a long life. 3、Add Interesting Ambience: When you turn off the lights in your room or at a party, these flickering light cups will bring you amazing visual attraction. 4、Automatic Switch: Just add liquid and activate the flashing color LED light at the bottom of the cup, when the cup is empty, the light will turn off. 5、Lighting Activities: LED wine glasses are great party gifts or decorations, they will glow in nightclubs, holiday parties, birthdays, weddings, sports events, festivals, night activities, bars, etc. Specifications Item Type: LED Luminous Cocktail Glass Material: PS Gross Weight: 427g / 15.1oz Height: Approx.183mm / 7.2in Light Sources: color Capacity: about 150ML Power Supply Mode of Single Product: 1 CR2032 button battery (included) Single Battery Capacity: 220 mAh Package List 6 x Cup