Hamilton Jazzmaster Open Heart Auto

The Hamilton Jazzmaster Open Heart Auto, reference H32705521, has a 42 mm steel case water resistant to 50 metres. The dial carries central seconds beneath sapphire, with an opening onto the mechanism. Self-winding calibre H-10 has an 80-hour power reserve. Measuring 11.44 mm thick and 50 mm from lug to lug, the case has a see-through back, on a leather strap with 22 mm lugs and a folding clasp.