Binoculars, 8x40, Full Size Porro Prism, Long Eye Relief With BMC Coating on lenses This binocular is a commercial product used by bombing/gunnery ranges, morale, welfare and recreation, air force communications command, security police activities, and other activities Magnification 8 x Objective diameter 40 mm Prisms: BaK4 Porro Lenses: fully coated Field of View@ 1000 yds: 435 ft. Field of View@ 1000 m: 145M Focusing: Center focus with independent right ocular adjustment FBMC (Fully Broad Band Multi-Coating) Glass Coated Lenses providing superior image brightness Eye Relief: 19mm (good for use with glasses) Comes with eyecups, eyepiece and objective lens caps, neck straps, carrying pouch, lens cloth, and full instructions Tripod mountable Weighs just 760 grams (1.7 lbs)