This is a perfect microscope for students to learn science offering six magnification settings 40x 80x 100x 200x 400x and 800x. It comes with full optical glass elements metal framework 360 deg; 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 Brand: AmScope Model: M148B Color: White/ black Magnification: 40x 80x 100x 200x 400x and 800x Objective diameter: 4x 10x 40x Eye relief: Accurate alignment ensuring a fatigue-free long time viewing Lens coating: Fully coated optical system Requires batteries: Yes Body material: Metal/ alloy Weight: 4.45 pounds Dimensions: 7 inches high x 10 inches wide x 15 inches deep