Hamilton Khaki Navy Frogman Auto

The Hamilton Khaki Navy Frogman Auto, reference H77855330, has a 46 mm steel case in black PVD, water resistant to 300 metres. A sapphire crystal covers the black dial with central seconds. Calibre H-10 is self-winding, with a Nivachron balance spring and an 80-hour power reserve. Measuring 13.58 mm thick and 52 mm from lug to lug, the case carries a wave-look rubber strap with 22 mm lugs and a pin buckle. A shaped protector surrounds the case's screw-down crown.