Hamilton Jazzmaster Open Heart Auto

The Hamilton Jazzmaster Open Heart Auto, reference H32705131, has a 42 mm steel case with water resistance to 50 metres. Sapphire covers the black dial's central seconds and opening onto the mechanism. Measuring 50 mm from lug to lug and 11.44 mm thick, the case has a see-through back and 22 mm lugs on a steel bracelet with a folding clasp. An 80-hour power reserve is held by the self-winding H-10 movement.