UNICO ZM190 Series Zoom Stereo Microscope w/Focusing Stand Binocular. The ZM190 have been built to meet customer demands for a reliable performance at a competitive price. The superb quality and affordable price make the ZM190 Series ideal instruments for a variety of industrial medical educational and special OEM applications. Binocular head features high Eyepoint eyepieces dual diopter control for sharp clear focus control matched to individual eye differences. The top and bottom light is a super bright LED designed to provide excellent lighting without giving off heat. Four-way lighting controls: Off Top light only Bottom light only Both Top and bottom light on. Specifications for UNICO ZM190 Series Zoom Stereo Microscope: Manufacturer: UNICO Magnification: 0.7 - 4.5 x Color: White Illumination Type: Halogen Brightness Settings: 4 Magnification Type: Variable Features of UNICO ZM190 Series Zoom Stereo Microscope WF10X paired eyepieces; 0.7x-4.5x continuous zoom body; Focusing stand with top and bottom led illumination; Package Contents: UNICO ZM190 Series Zoom Stereo Microscope UNICO ZM194: ZM190 Series Zoom Stereo Microscope w/Focusing Stand Binocular