LEUPOLD BINOCULAR BX-4 PRO GUIDE HD 12X50 GEN 2 ROOF GREY FEATURES: Magnification 12x Color Black Armor Coated Material Magnesium Field of View 257 ft @ 1000 yds Objective 50mm Close Focus 9.30 ft Eye Relief 16mm Length 6.80" Proofs Fog / Waterproof Min Distance 56mm Optic Coating Diamond Coat 2 Prism Type Roof Weight 29.30 oz Exit Pupil Diameter 4.20mm Diopter Adjustment Adjustable Max Distance 74mm