The Abyss is a great visual effect. It creates a motioning image giving you a multi purpose effect with its Internal 4-gel color wheel (Red, blue, green, & yellow). It features a 1 x 24v 250w (EL-ELC) Lamp, which gives you the projection you need for most type applications. On the rear of the unit there is a switch, which gives you the ability to stop the color wheel on one color, or have the color wheel continuously rotate automatically changing color. Dimensions: 9.75"H x 8.5"W x 4"D.