Diopter Adjustment For Fine Focusing Porro Primis Binocular

Fully coated optics and BK7 prisms. Protective rubber covering. Water resistant body and nylon carrying case. Diopter adjustment for fine focusing. Molded finger impressions and embossed logos for a firm grip. Tripod adaptable. No fault lifetime warranty 7 x 35 - 8° angular field of view, 419' linear FOV, 5 mm exit pupil, 11 mm eye relief, 15' near focus. 10 x 50 Wide-angle - 7° angular field of view, 367' linear FOV, 5 mm exit pupil, 11 mm eye relief, 24' near focus. 20 x 50 - 3.2° angular field of view, 168' linear FOV, 2.5mm exit pupil, 7mm eye relief, 36' near focus.