Hamilton Jazzmaster Open Heart Auto

The Hamilton Jazzmaster Open Heart Auto, reference H32675151, has a 40 mm steel case water resistant to 50 metres. A see-through case back forms the rear of the 11.05 mm thick case. The case sits on a steel bracelet with 20 mm lugs and a folding clasp. Through sapphire crystal, the silver dial shows central seconds. A cut-out in the dial reveals the inner mechanics. Self-winding calibre H-10 keeps an 80-hour power reserve with its Nivachron balance spring.