Celestron CM800 Compound Microscope w/40x - 800x Power, 3AA Batteries, 10 Prepared Slides,10x and 20x eyepieces, AC Adapter Lab-ready compound microscope with 800x power 10x and 20x eyepieces with 4x, 10x and 40x objective lenses View specimens at 40x, 100x, 250x, 400x, 800x magnification Built-in, adjustable, upper and lower LED illumination 3 AA batteries included for field use 10 prepared slides included