tectwins Blinking Multicolor LED Light Up Drinking Glass Glass Tumbler  (250 ml)

Just add liquid to activate the flashing multicolored LED in the base of the cup. The lights turn off when the cups are empty. When activated, the LEDs flicker, change color and glow in a beautiful changing rhythm. Flash Light Up Cup made of high quality environmentally friendly acrylic material, Size: caliber 8cm x height 9.7cm x bottom 5.5cm. Perfect for parties, bachelor party, and special occisions, or decoration for Christmas, New Years Eve, birthdays, weddings, shots, bars, night clubs or discos. So Eye - Catching - Perfect for Most Occasions?- Best drinkware party favors or decoration for Christmas, New Years Eve, birthdays, weddings, shots, bars, night clubs or discos.Perfect for drink competition, see who is the first to finish the drink and turn off the LED. ?Durable - Replaceable Batteries & Seal Ring?- The battery compartment is sealed with a rubber o-ring. 2 x 2025 coin batteries are installed in the bottom of the cup. Just stick a penny into the battery cover slot, give it a counterclockwise twists.