Hamilton Khaki Aviation Pilot Day Date Auto

The Hamilton Khaki Aviation Pilot Day Date Auto, reference H64635140, has a 42 mm steel case water resistant to 100 metres. Enlarged numerals frame the blue dial's day-date window and central seconds beneath sapphire. Self-winding calibre H-30 keeps an 80-hour power reserve with a Nivachron balance spring. At 12.1 mm thick, the case has a see-through back and sits on a steel bracelet with 20 mm lugs and a folding clasp.