Hamilton has been making watches since 1892, starting in Lancaster, Pennsylvania, and supplied the U.S. Armed Forces in both World Wars — the Khaki Field is a direct descendant of that heritage. The King Auto is 40mm stainless with a black dial, 24-hour military scale, day-date at 12, and an H-40 automatic with an 80-hour power reserve. Swiss made, and one of the best values in an automatic field watch at this price.