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 doesa basic biological scope to look at specimens on a slide (light shines up from under the slide and through the tissue) and a traditional stereo or dissecting microscope to solid view objects at lower power (light shines down onto the specimen to be observed). This new Duo-Scope with dual lighting for both types of applications! Cordless battery power makes it portable for field study. Priced to fit any budget with the same fine quality as our other scopes 10X Eyepiece 4X 10X 40X Objectives 40X 100X & 400X Magnification Real optical glass lenses Dual focusing knobs 2 LED lights above and below Uses 3 AA Batteries (not included)