The Khaki Field Mechanical 36mm brings a historic Hamilton design to collectors around the globe. The watch focuses on authenticity and craftsmanship through a faithful revival of one of Hamilton’s rarest vintage military references. The design draws directly from the FAPD 5101 navigator’s watch issued to U.S. Air Force navigators around 1970. Produced for only a short period, the watch featured a larger-than-usual 36mm parkerized case and the Hamilton caliber 684, a manually wound movement developed specifically for the model and never used elsewhere.