This high power microscope has incident and transmitted illumination. Designed for students to learn science it comes with full optical glass elements metal framework 360 degree rotatable monocular head coarse and fine focusing and top and bottom LED lights that use either an outlet or three AA batteries. It can view transparent biological slides or opaque objects like stamps and coins. Brand: AmScope Model: M158-2L Color: White/ black Magnification: 40x 100x and 400x 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: 5.15 pounds Dimensions: 7 inches high x 10 inches wide x 15 inches deep