Hamilton Khaki Field Expedition Auto

The Hamilton Khaki Field Expedition Auto, reference H70315931, has a 41 mm steel case with a screw-down crown, water resistant to 100 metres. Its 11.5 mm thick case has a see-through back and 20 mm lugs, on a textile strap fastened by a pin buckle. Self-winding calibre H-10 stores an 80-hour power reserve and regulates with a Nivachron balance spring. The black sandblasted dial shows central seconds through a sapphire crystal.