Specifications:

Body:  Trinocular, rotatable 360 degrees
Zoom Ratio:  6.5:1
Zoom Range:  0.7x to 4.5x
Zoom Control:  Dual, graduated, bilateral mount
Magnification:  7x - 45x (with 10x eyepieces)
Field of view:  32mm - 5.1mm
Working distance:  93mm
Eyetube inclination:  45 degrees
Interpupilliary Distance Adjustment:  54mm - 75mm
Dioptric Adjustment:  Dual (+/- 5 diopters)