XSZ-107BN 1600X bilogical Microscope : objective:4x,10x,40x(s),100x(s,oil) wide field plane-scope e... XSZ-107BN 1600X advanced bilogical Microscope : objective:4x,10x,40x(s),100x(s,oil) wide field plane-scope e... Theory: Biological Microscope microscope