... ·SpecificationTotal magnification: eyepiece:10×,16. Objective:1×,10×,16×compensation: ±5DDiameter of light: 0.1, 1, 3,10mmPupil distance: 45-70mmWorking distance: 78mmSlit width ... .2, 0.3, 5,10mmFilter: Hear absorption, Redfree, Cobalt blueIllumination rotator angle: horizontal ±30°Illumination: White LED Portable Slit lamp microscope YZ-3