Hamilton Jazzmaster Open Heart Auto

The Hamilton Jazzmaster Open Heart Auto, reference H32675551, has a steel case measuring 40 mm across, water resistant to 50 metres. At 11.05 mm thick, the case has a see-through back and 20 mm lugs on a calfskin strap with a pin buckle. The silver dial displays central seconds under sapphire, with cut-outs exposing the mechanism. Self-winding H-10 calibre combines a Nivachron balance spring with an 80-hour power reserve.