If you want one watch that can handle a dive trip, a desk job and a wedding, the steel-bracelet Hamilton Khaki Navy Frogman Auto H77485130 makes a strong case. It’s a 300-meter automatic diver with a black dial and a 41mm stainless steel case, and it carries one of the most interesting back stories in Hamilton’s catalog.

The Frogman name dates to the watches Hamilton built for U.S. Navy frogman teams, a model that later appeared on screen in the 1951 film The Frogmen. Today’s Khaki Navy version honors that history with a bridge-shaped crown guard protecting the screw-down crown, a design cue lifted from the original. The dial is deliberately uncluttered: three hands, bold luminous markers and no date window to break up the symmetry.

Inside is the automatic H-10 caliber, with 80 hours of power reserve and a Nivachron balance spring for improved stability against magnetism and temperature swings. Measuring 13.09mm thick, it sits comfortably on the wrist, and the steel bracelet’s folding clasp keeps it secure through every swim.

Hamilton H77485130 at a glance

• Model: Khaki Navy Frogman Auto
• Case: 41mm stainless steel, 13.09mm
• Dial: black, no-date three-hand layout, Super-LumiNova
• Movement: H-10 automatic, 80-hour power reserve
• Balance spring: Nivachron
• Crystal: anti-reflective sapphire
• Water resistance: 30 bar / 300m, screw-down crown
• Bracelet: stainless steel, folding clasp, 20mm lug width

Built for the deep, refined enough for dry land.