Promotional Barware, 10 oz Square Bottom LED Rocks Glass - Color Changing & Prism Effect, Our clear acrylic 10 ounce rocks glass features a square bottom and 6 bright LEDs: 2 red, 2 green, and 2 blue that blast bright lights through a square prism bottom. Choose from a fun flashing mode, steady on mode, or a blinking mode. Signature drinks are sure to be super exciting when served in this sleek light up rocks glass. Each glass comes with 3 replaceable AG13 batteries included and installed. Hand wash only. Not safe for microwave or dishwasher. ... #LIT885 $4.99/each.