Trinocular biological microscope has an eye piece SWF10X/20. Objective lenses range from 4x to 100x with a movable stage of the size 156x138 mm moves 76x54 mm. Its interpupillary distance is 52 - 75 mm. It is illuminated by the Halogen bulb of 6V / 20W and powered at 110 - 220V