1. AUTOMATIC ON OFF: Simply add liquid to activate the multi-colored flashing LEDs at the bottom of the mug. The lights go out when the cups are empty. When activated, the LEDs flicker, change color and light up in a beautiful rhythm that is guaranteed to inspire you.^ 2.PERFECT FOR PARTIES AND SPECIAL OCCASIONS: party items or decorations for Christmas, New Years Eve, birthdays, weddings, recordings, bars, nightclubs or discos.^ 3. AVAILABLE LIQUIDS: water, beer, wine, whiskey, vodka, martini, drinking utensils, coffee, tea, etc.^ 4. ELEGANT, CUT GLASS DESIGN: The sparkling pineapple crystal style design brings out the flashing LEDs for a cool lowball glass that your guests and friends will remember and desire.^ 5. GIFT: The glitter mug is the gift for family and friends and share a good time with family and friends.