From MountainsPlus... ECHO 5058 10 X 26: Size: 4.5"" x 2.8"" x 1.8"". Weight: 9.2 oz. 10X magnification, 12 ft. close focus. 2.6 mm exit pupil, 12 mm eye relief 341ft. field of view @ 1000 yds B ... more...