Perma Focus 10x50mm Binocular - 10x magnification. Full-size and full-featured for increased brightness at long distances. Fully coated optics for superior light transmission. Unique "Focus-Free" feature which is ideal for sporting events. Roof prism system. BK-7 prim glass. Field of View: 294' at 1000yds. Eye Relief: 12mm. Non-slip rubber armor absorbs shock while providing a firm grip. Twist-up eyecups. Includes carrying case, neck strap and lens cloth. Weight: 14.1oz. Color: Black.