Celestron 44121 Microscope Kit Biological microscope with powers from 40x to 600x 4x, 15x, and 30x objective lenses and 10-20x zoom eyepiece featuring high-quality glass optics Includes 3 prepared glass slides, 2 blank glass slides, 1 blank well slide, light diffuser, needle probe, eye dropper and tweezers Sample specimens to get you observing immediately: rocks, honeybee wing, and brine shrimp