The My First Lab Duo-Scope is a two-in-One combination microscope that comes complete with a 50 piece accessory kit. Two light sources allow this microscope to magnify both slides and solid objects! View slides, coins, plants, stamps, insects, jewelry and more. You would need two instruments to view what this one does. It's a basic biological scope for looking at specimens on a slide (light shines up from under the slide, illuminating the slide) and a traditional stereo or dissecting microscope to view solid objects at lower power (light shines down onto the specimen to be observed). Cordless battery power makes it portable for field study. Features: 10X Eyepiece; 4X, 10X, 40X Objectives; 40X, 100X and 400X Magnification; Real optical glass lenses; Dual focusing knobs; 2 LED lights, above and below; Uses 3 AA Batteries (not included). Includes 50 piece accessory kit for hours of fun scientific research: Vinyl dust cover; 5 blank slides; 1 concavity (well) slide; 4 prepared slides; 2 bottles of stain; Forceps; Scalpel; Plastic test tube; Plastic Petri dish and more. N.W.:4 lbs.; Full color box size. CE certified.