For both the Army and the Marine Corps, the primary field binocular is the M22 binocular. These bins have 7 x 50 in which 7X is the magnification and 50 mm objective lens diameter. The measures of these bins 7.1 inches x 8.2 inches x 7.4 inches. As these bins are made for the army, so they have the best quality and heavyweight that is 2.7 pounds.