Hamilton Jazzmaster Open Heart Auto

The Hamilton Jazzmaster Open Heart Auto, reference H32675150, has a 40 mm steel case water resistant to 50 metres. Cutouts in the silver dial reveal the movement, with central seconds beneath a sapphire crystal. A see-through back closes the 11.05 mm-thick case, on a steel bracelet with 20 mm lugs and a folding clasp. The H-10 calibre winds automatically, keeping an 80-hour power reserve and a Nivachron balance spring.