The AmScope 40X-1000X Biological Science Student Biological Compound Microscope is a perfect microscope for students to learn science offering five magnification settings 40X 100X 250X 400X and 1000X. It comes with full optical glass elements metal framework 360° rotatable monocular head and the LED illumination system that uses either wall-power (adapter included) or three AA batteries (or re-chargeable batteries). It is an ideal microscope for home school or for students from elementary to high school. It is also an excellent instrument for hobbyists. This unit is manufactured under ISO 9001 Quality Control Standard and comes with a Five (5) Year Factory Warranty.