SWISS WONDER Colour Changing Cup Crystal Beer Mug (294 ml)

This cup is an environmental protection transparent shine cup when poured into liquid (water, beverage, etc), it will light up and flash immediately, very magical, suitable for celebrations, parties, bars, gifts and so on. Water induction cup, if no water in the cup, it will not light up. Bright colorful and fun beverage glass with assorted colors flashing in the bottom. Attract the attention of everyone at the party with this fun, bright, and colorful flashing beer mug. It is to show the glare of the colorful lights when Raising your hand. When the drinks also glow glaring light colors,That is a kind of charm and mysterious, even the stimulation of fresh feeling. It turns off when there is no liquid left.