Parallel optical zoom system,binocular head,20 degree inclined,interpupilary distangce 55-75mm,EW10X/Ø22,WF10X/Ø24,Zoom Objective 0.8X~5X,1X Plan achromatic objective,Zoom Ratio 1:6,Working distance 78mm,Focusing Range 105mm,Transmission & reflection LED, you want to know more,you can refer to my nbkele dot net.
Stereoscopic Microscope NSZ-806