40X-1600X Biological Microscope 1.45mm Din Achromatic Objective:4X,10X,40X(S),100X 2.Wide field Eyepiece;WF10X,WF16X 40X-1600X Biological Microscope1.45mm ... DIN Achromatic Objective:4X,10X,40X(S),100X(S, Oil) ... Plane-Scope Eyepiece:WF10X,WF16X;3.Total Magnification:40X-160X4.Articulated Free Trinocular Head,Interpupillary Distance:55 ...