UNICO Binocular Infinity Achromat 40X 100X 400XR 100XR Oil. That's why these UNICO Microscopes are so highly regarded by researchers doctors and clinicians worldwide. The UNICO Medical / Research Microscope is also a fully adjustable mechanical stage that features low-position coaxial X-Y controls. Unlike many competitor's products the Unico Microscope has an exceptionally smooth X-Y stage travel and allows you to make minute adjustments to the focus and diopter so you can get a truly personalized viewing experience. That's because Unico planned all the moving parts of the Microscopes into an integrated single unit allowing you to eliminate many of the moving parts from the microscope if you so desire. This allows you to keep the remainder of the Microscopes workings entirely on one bench. This allows you to put the other larger more cumbersome parts out of the microscope as well. This is one of the most "up-to-date" models UNICO sells. All models are the top selling UNICO Microscopes and they are the result of more than 50 years of experience in the manufacture of precision optical and mechanical parts. The design of these UNICO Microscopes was based on input from doctors scientists and other clinicians. Features of UNICO Medical / Research Microscopes IP730 and IP750 Series: HEADS: Binocular or Trinocular(80/20 beam splitter) heads . Featuring 55 - 75 mm interpupillary distance adjustment. Both heads rotate 360. one eye tube with diopter adjustment EYEPIECES: 10X 20mm FN High Eyepoint Widefield (IP730) or 10X 22mm FN High Eyepoint Widefield (IP750) STAGE: Graduated Mechanical Stage with low-position coaxial X-Y controls. Ball bearing movement allows for smooth precise adjustments. Stage size is 180 mm x 150 mm and the range of X-Y stage movement is 80 mm x 50 mm OBJECTIVES: All models are equipped with either achromatic or plan Infinity 4X 10X 40XR and 100XR (Oil) objectives. The Phase Contrast model has 4X Plan 10X 40X and 100X Plan Phase objectives CONDENSER: Focusable and centerable N.A. 1.25 Abbe condenser with graduated iris diaphragm and filter holder. Phase contrast microscopes have a phase condenser ILLUMINATION: Koehler illumination with field iris diaphragm featuring a 6 Volt / 20 Watt Halogen light source. Variable intensity rheostat wheel is located on the left side of the base ELECTRICAL: 110V- 60 Hz to 240V- 50 Hz Five Year Limited Warranty One Year on electrical system; excludes bulbs and fuses Package Contents: UNICO Medical / Research Microscopes IP730 or IP750 Dust cover Blue filter 2 extra fuses Manual IP750: UNICO Binocular Infinity WF10X 22mm FN Eyepieces; 4X 10X 40XR 100XR Oil Achromat Infinity Objectives