Key Feature: 7X-45X zoom magnification power with crisp sharp images Super widefield high-eyepoint optics widefield of view 4" (100mm) working distance Sturdy all-metal pillar stand offers super widefield optics and 7X-45X zoom magnification power with a cool light illumination system. It is an ideal instrument for industrial inspection and/or biological lab applications. This microscope is perfect for gemologists, manufacturing engineers, dental lab technicians, and anyone in electronic and semiconductor industries. An excellent stereo inspection microscope 7x-45x super wide zoom magnification power Bright cool light 56-LED illumination system High resolution with great flatness and contrast, giving sharp and clear images Binocular head with 45 degree inclined 360 degree swiveling eye tubes Sharp stereo erect images with a wide field of view Crystal clear original true color microscope images Dual eye tubes with adjustable diopters Large working distance Sturdy all-metal table stand Accurate alignment reduces eye strain for longer periods of viewing Full optical glass elements Precise ground glass lenses Full metal chrome-plated mechanical components Adjustable interpupillary distance Rubber eye-guards included Specification: Head: 360 degree rotatable 45 degree inclined binocular Eyepieces: 30mm super widefield high-eyepoint WF10X/20MM Objective Zoom Range: 0.35X-9.0X, using the Barlow lenses Working Distance: 4" (100mm) Diopter Adjustment: +/- 5dp Interpupillary Distance: 2-3/16" - 2-15/16"(55-75mm) Round Plate: 3-3/4" (95mm) in diameter Stand: 10" x 7-7/8" x 10.75" (254 x 200 x 275mm) Accessories: Paired eye-caps Package incluede: 1 x Binocular Stereo Zoom Head 1 x Pair of Super Widefield 10X/20MM Eyepieces 1 x Pair of Eye-Guards ?Optional? 1 x 2.0X Microscope Auxiliary Objective Lens(Working Distance 40 mm) 1 x 0.5X Microscope Auxiliary Objective Lens(Working Distance 165 mm) 1 x 1.0X Microscope Auxiliary Objective Lens(Protective Function Lens)