The microscope features a rubber eye piece, LED light, 40-640x magnification, geared focusing system, projection view with 10x-100x magnification, and rotatable head. Recommended for children 8 years of age and older with adult supervision. The Dual Viewer Microscope features both 40-640x magnification in addition to a projector view! Young scientists can use the included prepared slides or use the blank ones to explore the world around them.