Featuring ashperical multicoated lenses and BaK4 high index Porro style prisms - Turn-and-slide rubber eyecups - Ergonomic lightweight design - Durable and protective rubber-armored coating - Manufactured responsibly with lead and arsenic-free Eco-Glass - Focusing System: Central Focus - Magnification: 12 x - Objective Diameter: 50 mm - Angular Field of View (Real):5.2 - Angular Field of View (Apparent): 57.2 - FOV at 1000 yds: 272 ft - Close Focus Distance: 26.2 ft - Exit Pupil: 4.2 mm - Relative Brightness: 17.6 - Eye Relief: 11.5 mm - Size (Length x Width): 7 x 7.8 in - Weight: 32.1 oz - Prism: Porro