Product Name: Zoom Stereo Microscope 7X-45X Szm45-B1 Binocular Model NO.: SZM45-B1 Principle of Optics: Differential Interference Contrast Microscope Principle: Optics Usage: Teaching, Research Shape: Rectangular Prism Kind of Light Source: No Light Stereoscopic Effect: Stereoscopic Effect Mobility: Desktop Number of Cylinder: Binoculars Type: Stereomicroscope Magnification: 7X-45X Trademark: shinea Transport Package: Foam+Carton Box Specification: 2pc/ctn Origin: China HS Code: 9011100000 Product Description Total magnification7-45XZoom ratio6.5:1Objective Zoom Range 0.7×-4.5×Wide Field EyepieceWF10×/20mm Working distance100mmInterpupillary Distance 55-75mmDiopter adjustment±5 Diopter Viewing headbinocular head and rotable 360 degree Illumination no(led ting lamp opition)