Xcellent Global Multi-color Flashing LED Light Cups Water/Beer/Cola Mug Cup for Bar Party Romantic Drinking Gift, 6.5oz HG114 This LED flashing mug cup perfects for Cola, beer, water etc., makes your party wedding or festival more interesting and romantic. Liquid sensor: the LED light will auto light up when pouring in water or beer, then turn off automatically when drinking or pour out the water or beer 5pcs LED, LED Color: Red, blue, green, orange Capacity: 6.5oz, Material: Acrylic, Powered by one button battery (included and replaceable) Operating time: 30 hours; Height: 3.1 inch; diameter: 3.1 inch