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Model BT5564 Specification 8x22mm 10x22mm 12x22mm Magnification 8x 10x 12x Obj.lens (mm) 22 22 22 Angle 7.0° 6.2° 5.5° Field of View at 1000m 122 110 96 Apparent Field of View 56° 62° 66° Exit pupil ...