The Bi-Lens 35mm Sawyer Bakelite Slide Viewer is a vintage film viewer designed by Sawyer in the United States. This unique device features a built-in light for enhanced viewing of 35mm slides. The brown Bakelite construction adds a touch of retro charm to any film photography enthusiast's collection. With its compact and functional design, this slide viewer offers a convenient way to enjoy and share your favorite 35mm films in style. Great condition. Includes box and instructions. Takes two C batteries.