Personal Slide Viewer Provides a Glimpse Into the Past by Enlarging and Lighting 35MM Slides & Film Negatives for All to Enjoy. ( USB Cable Included / But 4*AA Batteries NOT Included) Features: 1)Load and Look Ease,Use the sliding slot or film paper feeder to place it in an instant to view the old photos, 2)Built-in LED Light Box,There is a super bright sun LED bulb behind the glass observation zone, illuminated the image to show the greatest definition. 3)Make it Magnified,3x magnification,photos appear bigger without losing sharpness or detail 4)Easy to Use,portable to use, fits 2X2" mounted slides and 35mm film strips and negatives. Convenient Battery Operation Lets You View Old Slides Anywhere in the World Specifications : Power Source: 5V AC/DC Adapter (not included) OR 4*1.5V AA alkaline batteries (not included. You can use whatever 5V AC/DC power adapter with our USB power cable for the viewer. Magnifying Power: 3x. Light Source: Daylight LED. Dimensions: 6.5" x 6" x 3" (165 x 155 x 80mm). Net Weight: 17.5 oz. (495g).