Feature●Total magnification: 2.1X - 90X; Microscope body - Binocular 360 degrees rotatable 45 degrees viewing head; inclined ocular tubes - Diopter adjustment rings on both ocular tubes - Interpupillary distance adjustable: 47 ~ 73mm (1-3/4inch~ 2-3/4inch) - Inner diameter of ocular tube: 30mm (1-3/16inch)●Total magnification: 2.1X - 90X; Microscope body - Binocular 360 degrees rotatable 45 degrees viewing head; inclined ocular tubes - Diopter adjustment rings on both ocular tubes - Interpupillary distance adjustable: 47 ~ 73mm (1-3/4inch~ 2-3/4inch) - Inner diameter of ocular tube: 30mm (1-3/16inch)Description Packing List: Binocular stereo microscope body; A pair of WF10X/20 eyepieces; A pair of WF20X/10 eyepieces; A pair of rubber eyeshields; A 0.3X auxiliary lens; A full set of articulating arm boom stand