Hamilton Jazzmaster Open Heart Auto

The Hamilton Jazzmaster Open Heart Auto, reference H32215190, has a 36 mm steel case with a see-through back. Cut-outs in the mother-of-pearl dial reveal the movement beneath sapphire. Calibre H-10 winds automatically and holds an 80-hour power reserve. At 10 mm thick and 42 mm from lug to lug, the case is water resistant to 50 metres, on a steel bracelet with 18 mm lugs and a butterfly clasp.