Nikon

Featuring ashperical multicoated lenses and BaK4 high index Porro style prisms - Turn-and-slide rubber eyecups - Fingertip zoom control - Ergonomic lightweight design - Durable and protective rubber-armored coating - Manufactured responsibly with lead and arsenic-free Eco-Glass - 50mm objectives - Focusing System: Central Focus - Magnification: 10 -22 x - Objective Diameter: 50 mm - Angular Field of View (Real): 3.8 - Angular Field of View (Apparent): 36.7 - FOV at 1000 yds: 199 ft - Close Focus Distance: 49.2@10x ft - Exit Pupil: 2.3 -5 mm - Relative Brightness: 25 @ 10 x - Eye Relief: 8.6 mm @ 10 x - Size (Length x Width): 7.8 x 7.8 in - Weight: 33.9 oz - Prism: Porro