Hamilton Khaki Navy Frogman Auto

The Hamilton Khaki Navy Frogman Auto, reference H77455331, is water resistant to 300 metres in a 41 mm steel case. The black dial displays central seconds under sapphire. Self-winding calibre H-10 retains an 80-hour power reserve and has a Nivachron balance spring. Measuring 14.95 mm thick, the case has 20 mm lugs and a waved rubber strap with a pin buckle. A screw-down crown sits within a bridge-shaped crown guard.