Hi, Dear little angel, welcome to Jacenvly, our products are cheap and good quality, price is fair, you can't miss it. If this product is not your style, please click on our store, we have many kinds of products, there will be you like and suits you. If you have any questions about your purchase, please send us the first message, we offer world class customer service to make your purchase without your worries. Have a nice day. Olorful LED Glowing Beer Cup Induction Flashing Wine Glass Party Bar Drink Cup Features: for men, women, adults and children, each tumbler is made from durable, food safe acrylic. Easy to clean, just hand-wash and allow to dry. From weddings to birthdays to New Year’s holiday parties, adds an extra level of to any special occasion! Each lights up when ever liquid is present and turns off when empty. Works with any drink. Two batteries are included with each cup. Give your guests a. Make memories that last with a gift that your will cherish. Available as singles, and sets of 4 or 8 tumblers. Whether you need to spice up a birthday party, anniversary, Halloween, Thanksgiving, Christmas, New Years or holiday party, Up are the perfect choice. for kids and adults, these glasses light up, change colors and flash whenever any is present in the cup Product Description: Package includes:1pc luminous cup sensor cup Features: for men, women, adults and children, each tumbler is made from durable, food safe acrylic. Easy to clean, just hand-wash and allow to dry. From weddings to birthdays to New Year’s holiday parties, adds an extra level of to any special occasion! Each lights up when ever liquid is present and turns off when empty. Works with any drink. Two batteries are included with each cup. Give your guests a. Make memories that last with a gift that your will cherish. Available as singles, and sets of 4 or 8 tumblers.