This Stereo Zoom Microscope offers a robust set of features at an attractive price, plus a third vertical eyetube suitable for a Digital Microscope Eyepiece (MA88, available separately) or Digital Microscope Video Eyepiece (MA87, also available separately). Please note that the third eyepiece is not included and should be ordered separately if desired. Features: 3D System is infinitely variable; 10X Widefield Eyepieces with rubber eyeguards; Binocular observation tubes, inclined 45 degrees; Head rotatabie 360 degrees; Interpupillary distance adjustable 55mm to 77mm; Horizontal zoom controls at each side of head; 1X to 4X objectives, total magnification 10X to 40X; Field of view ranges from 23mm to 5.5mm diameter; 85 mm working distance; 20W Halogen transmitted illuminator under 75 mm frosted glass stage plate; 20W Halogen incident (top) illumination; 3 way power switch allows incident lighting, transmitted lighting or both,UL approved; Dust cover and instruction manual; Overall size 6 3/4" x 9 1/2" x 20" H, N.W.: 15 1/2 lbs. CE certified.