This is the classic desktop slide viewer that allows you to easily preview up to 36 slides. Made by Pana-Vue, purveyors of slide viewing devices since the 1950s, it speeds up previews of boxes of slides before you commit to a large digital conversion project or assists in putting together a traditional slide show using a carousel; it also works easily for casual viewing. The hopper can accommodate both 35mm and other 2" x 2" mounted slides, displaying pictures on the illuminated 2 5/8" view screen with 4X magnification. Slides are advanced with an easy push-pull mechanism; viewed slides are deposited into a receiving tray. Includes a screw-type #245 flashlight bulb. Plugs into AC or uses two D batteries (not included). 6" H x 8" W x 5" D. (1 1/2 lbs.)