Nikon

Focusing System: Central Focus - Magnification: 7 x - Objective Diameter: 50 mm - Angular Field of View (Real): 7.2 - Angular Field of View (Apparent): 50.4 - FOV at 1000 yds: 378 ft - Close Focus Distance: 33 ft - Exit Pupil: 7.1 mm - Relative Brightness: 50.4 - Eye Relief: 22.7 mm - Size (Length x Width): 7.6 x 8 in - Weight: 39.5 oz - Interpupilary Distance: 56 - 72 mm - Waterproof/Fogproof: Yes - Prism: Porro