Add a blast of bright light to your favorite cocktail with 10 oz LED Square Bottom Rocks Glass. Our crystal clear acrylic Rocks Glass features bright LED's in the base that are accented with a prism bottom to create a light show with each drink served. Perfect for your Mint Juleps for the Kentucky Derby events or any specialty cocktail. Our LED Square Bottom Rocks Glass features 3 distinct light modes: slow flash, fast flash & steady on. Each light up cup is illuminated by red, green & blue LED's. Perfect for serving up signature drinks at bars and restaurants, and for anniversaries, birthdays, grand openings or marketing your brand! Each 10 oz. Square Bottom LED Rocks Glass comes with (3) AG13 batteries included, installed & replaceable. Hand wash only. Not microwave or dishwasher safe. Cheers!