The Barska 40x - 2000x Compound Binocular Microscope delivers impressive detail and clarity with both a 10x and 20x wide field eyepiece, and a set of 4x, 10x, 40x, and 100x objective lenses. A 20 watt light with adjustable brightness allows the user to set the brightness setting while viewing a specimen. This Barska Compound Microscope features fine and coarse focus adjustments, slide retention clips, and a rotating nosepiece with four objective lenses. The 40x - 2000x Compound Binocular Microsc.