Product Name: Zoom Binocular Stereo Microscope Szm45n-2L 7X-45X Model NO.: SZM45N-2L 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 1. Objective Zoom: 0.7X-4.5X2. Zoom Ratio: 1:6.43. Eyepiece: WF10X/20mm (WF15X/15mm; WF20X/10mm; 25X/8mm for option)4. Auxiliary Objective: 0.5X/165mm; 1.5X/45mm; 2.0X/30mm5. Interpupillary Distance: 54-76mm6. Diopter Adjustment: ±5Packing2 sets/ctn with protective styrofoam box inside; ctn size:51*36*30cm; G.W.:4.5kgComponents: 1.Rubber Eyecups2.One pair of WF10X/20mm eyepiece3.Dustfree cover4.Black & White board and glass board