This is a perfect package of a high power microscope with a 10 piece slide kit for students to learn science. It comes with full optical glass elements, metal framework, 360 degree rotatable monocular head, coarse and fine focusing and LED illumination. It offers five magnification settings, 40x, to 1000x. The LED illumination system uses either an outlet (adapter included) or three AA batteries (or re-chargeable batteries). The 10-piece slide set includes five blank slides and five prepared slides: pine stem, sunflower stem, onion epidermis, cotton stem and house fly leg. 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: M150C-PB10 Color: White/ black Magnification: 40x, 100x, 250x, 400x and 1000x 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: 5.25 pounds Dimensions: 7 inches high x 10 inches wide x 15 inches deep