Hamilton Khaki Field Expedition Auto

The Hamilton Khaki Field Expedition Auto, reference H70315540, has a 41 mm steel case with a see-through back and water resistance to 100 metres. The case measures 11.5 mm thick, with a screw-down crown and 20 mm lugs on a leather strap closed by a pin buckle. Sapphire covers the blue textured dial and its central seconds display. An H-10 self-winding movement runs with a Nivachron balance spring and an 80-hour power reserve.