Powered by a 9v. PP3, the slide of the lens also closes the viewer. Name: Kodak Disc 3500 produced between: 1983 - 1984 Lens: 12.5mm, f / 2.8 Ashperic Shutter 2 speed type of film: HR Disc image size: 8 x 10 mm original list price (USD): 57.00
