Hamilton Jazzmaster Skeleton Auto

The Hamilton Jazzmaster Skeleton Auto, reference H42535560, has a 40 mm steel case water resistant to 50 metres. The open-worked green dial shows the mechanism through a sapphire crystal. Calibre H-10-S winds automatically and keeps an 80-hour power reserve with a Nivachron balance spring. A see-through back closes the 11.05 mm-thick case, which spans 42 mm from lug to lug on a smooth calfskin strap with 20 mm lugs and a pin buckle.