Flashing red, blue, and green LED lights will add spectacular color to your favorite drink. The lights are activated when the acrylic mug is picked up and tilted to take a drink. The lights automatically turn off within 10 to 15 seconds. There is a button on the bottom to turn the lights off. The mug is 6 inches tall and holds 19 fluid ounces. Requires three AAA batteries. Made by Duck House Sports.