Colorful LED Glowing Beer Cup Induction Flashing Wine Glass Party Bar Drink Cup Features: Elegant, Fun and Durable Perfect for men, women, adults and children, each tumbler is made from durable, food safe acrylic. Easy to clean, just hand-wash and allow to air dry. Great for Special Occasions From weddings to birthdays to New Years holiday parties, Light Up Glassware adds an extra level of fun to any special occasion Light Up Glass Whiskey Wine Beer Water Automatic On and Off Each lights up when ever liquid is present and turns off when empty. Works with any drink. Two batteries are included with each cup. Memorable Party Favor Give your guests a unique party favor. Make memories that last with a gift that your friends will cherish. Available as singles, and sets of 4 or 8 tumblers. Liquid Activated Fun Light Up Any Special Occasion Whether you need to spice up a birthday party, anniversary, Halloween, Thanksgiving, Christmas, New Years or holiday party, So There Light Up tumblers are the perfect choice. Fun for kids and adults, these glasses light up, change colors and flash whenever any liquid is present in the cup. Imagine the fun as all of your guests light up the occasion with these elegant cut-glass style plastic tumblers. Theres no switch to fumble with. As soon as the cup is empty the lights go out. Color: Transparent Installation Notes: Locate the battery compartment on the bottom of the tumbler. Remove the water resistant cover with coin or screwdriver. Install two CR2505 lithium batteries and replace cover. Note: There might be 2-3cm errors of dimension data due to pure manual measurement. There might be slightly color difference due to different light and monitor effect. Package Included: 1 x Wine Glass