Our LED tall pilsner cup has a variety of modes and is perfect for all your party drinkware needs! This clear acrylic beer mug holds 24 ounces of your favorite beverage. The switch on the bottom of the glass allows you turn on 6 ultra-bright multicolor LEDs. (8 LED modes: red constant, blue constant, green constant, red-green constant, blue-green constant, purple constant, red-green-blue constant, and color-morphing.) Batteries: 3, AG-13. Batteries are replaceable, included and installed. Hand wash only. Each box contains 1 LED pilsner cup.