Hamilton Jazzmaster Open Heart Auto

The Hamilton Jazzmaster Open Heart Auto, reference H32705541, has a steel case measuring 42 mm across, water resistant to 50 metres. The blue dial reveals part of the movement and carries central seconds under a sapphire crystal. A calfskin strap closes with a folding clasp at the 22 mm lugs of the 11.44 mm-thick case, which has a see-through back and measures 50 mm from lug to lug. The H-10 calibre is self-winding with an 80-hour power reserve.