Leupold Bx-1 Rogue Binocular 10X50mm Mossy Oak Break-Up Features: - Print Spec Sheet - Waterproof/Fogproof - Proprietary Nitrogen Fill Process - Synergy Built - Smooth Focusing - Twist Up Eyecups - Armor Coated, Rugged, And Waterproof. - Close Focus Distance Of 10 Feet. - Ergonomic Design - Diopter Focus - Porro Prism Design - Fully Multi Coated Lens System - BAK 4 Prisms Specifications: - Finish: Mossy Oak Break-Up - Interpupillary Distance: 56.00 (Low) And 68.00 (High) - Actual Magnification: 10.00 X - Objective Clear Aperture (mm): 50.00 mm - Linear Field Of View (ft/1000 Yd): 288.00 ft - Linear Field Of View (M/1000 M): 87.00 M - Angular Field Of View (degrees): 5.50 degrees - Twilight Factor: 22.40 - Weight (Oz): 33.00 Oz - Weight (G): 936.00 G - Length (In): 7.00 In - Length (mm): 178.00 mm - Exit Pupil (mm): N/A - Eye Relief (mm): 15.00 mm - Close Focus Distance: 30.00 ft - Close Focus Distance (M): 9.10 M