+
Total magnification: 3.5X-90X; Head: 45 degrees inclined 360 degrees rotatable trinocular; Eyepieces: 30mm widefield WF10X/20 and WF20X; Objective: zoom 0.7X-4.5X; Zoom ratio: 6.5:1; Auxiliary objective lens: 0.5X; Separate photo-tube focus adjustment; Beam split lever enables photo-tube or left eye-tube; Interpupillary distance: adjustment 2-3/16inch ~ 2-15/16inch(55mm ~ 75mm); Diopter: adjustable on both ocular-tubes +/-5dp