LED Cups, Flash Light Up Cups Automatic Water Activated LED Glow Shot Glasses Color Changing Wine Whisky Beer Cola Juice Drinkware Mugs for Christmas Halloween Bar Disco Night Club Party -4 PCS

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【Safe Material 】The transparent shine cups are made of strong acrylic plastic instead of glass, the cup will be stronger and more durable. No adverse effects on human health. 【 Liquid Activated】Two tiny pins on the bottom to activate the LED.Just add liquid to activate the flashing mug. The lights turn off when the cups are empty. When activated, the LEDs flicker. 【Easy to Use】It is durable and easy to use. Just stick a penny into the battery cover slot, give it a counterclockwise twists. 【Commodity size】The flash light up cup is 3.34 inches high. The opening diameter is 2.87 inches. Capacity is 0.2L and the weight is 4oz. The LED lash light up cup can hold about most 7oz liquid. 【Eye-Catching 】Make for an awesome Christmas gift! Best drinkware party favors or decoration for Halloween, Christmas, New Years Eve, birthdays, weddings, shots, bars or discos.You can easily be the center of attention.