Pistol-Shaped Silver-Plastic Keyboard Vacuum Powered by a Quartet of &ldquo;AA&rdquo; Batteries Small but handy, this is made especially for sucking schmutz out of keyboard crevices. (It's not for sucking a St. Bernard's worth of mud out of a carpet. The Micro-Vac is a pistol-shaped silver-plastic vacuum powered by a quartet of "AA" batteries that you'll have to add. Measures 4-5/8" x 3-1/4" x 1-1/2" and comes with a little extension wand and a brush. The Flash Gordonish design also makes it a great sci-fi prop.