Microscope is constructed with high quality optical glassMicroscope can be used in various applications from analysis of electronic components to advanced medical researchEase of use features makes it an ideal microscope for any school or college studentEquipped with transmitted illumination featureOut-of-the-box set-upBuilt-in coarse and fine focus adjustmentsBinocular lenses allow the user to observe using both eyes40X, 100X, 400X, 1000X magnification4X, 10X, 40X, 100X objectives10X wide field eyepieceAdjustable interpupillary distanceAdjustable working distanceAll metal construction.Head rotates 360?Includes 6-volt 20-watt spare bulb, 1A 250-volt spare fuse, 110-volt power cord, plastic dust cover and lens cleaning tissue