Hamilton Jazzmaster Skeleton Auto

The Hamilton Jazzmaster Skeleton Auto, reference H42535141, has a 40 mm steel case water resistant to 50 metres. Blue cut-out sections of the dial reveal the mechanism beneath a sapphire crystal. The case measures 11.05 mm thick by 42 mm from lug to lug, with a see-through back and a steel bracelet on 20 mm lugs, closed by a folding clasp. Self-winding calibre H-10-S keeps an 80-hour power reserve and a Nivachron balance spring.