Hamilton Jazzmaster Open Heart 40mm Mens Watch Blue

Ref. H32675540

The Jazzmaster line has long been Hamilton's home for watches that lean towards the dressy side without committing entirely to formality, and the Open Heart takes that a step further by cutting away part of the dial to expose the movement beneath. The aperture is not decorative in the way a printed pattern might be — the balance wheel actually moves, and on this version the smoked blue sunburst dial gives it a depth that plain white or black dials on the same model do not quite manage. The H-10 movement inside is built to an 80-hour power reserve, which means a watch left on the nightstand Friday evening is still running Monday morning. The Nivachron balance spring resists magnetic fields without needing a soft-iron cage, keeping the case trim at just over 11mm — slim enough on a 40mm case that it sits closer to a dress watch than most automatics with this much going on inside. The see-through caseback lets the same view continue from the reverse. Brown calfskin against the silver case and blue dial is a combination that ages in the owner's favour: the strap softens and takes on character while the dial stays clean.

Reference

H32675540

Brand

Hamilton

Case size

40mm

Case thickness

11.05mm

Lug width

20mm

Case material

Stainless steel

Case shape

Round

Dial

Blue

Crystal

Sapphire

Movement

Automatic

Calibre

H-10

Functions

Skeleton dial

Water resistance

50m

Bracelet / strap

Leather strap

Strap colour

Brown

Clasp

Buckle

Lume

Luminous

Retailer

Goldsmiths