Reverse compact Porro Binoculars optics 8x22mm

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 (mm) 2.7 2.2 1.8 Eye relief (mm) 12 12 10 Dusk Index 13.2 14.8 16.2 Relative Brightness 7.3 4.8 3.2 Type of Prism Porro Focus System Central Lens Coating Fully Multi Eyecups Fold-Down Size (mm) 113(L)x52(W)x90(H) Weight (g) 190 g