The original soldier's watch gets an original upgrade with Hamilton's first-ever bronze case. Each Khaki Field Mechanical Bronze has a unique story that will unfold with each wear as its case develops a distinct patina over time. Powered by our exclusive hand-wound H-50 movement, fitted to a titanium case back and matched with a soft brown leather NATO strap, this authentic 38mm favorite celebrates Hamilton's military heritage with an eye towards the future. What story will your field watch tell?Each Khaki Field Mechanical Bronze case will develop its own individual patina based on environmental exposure. Allow the patina to develop for a unique look. You may use a microfiber cloth to clean the watch.