Side by side

Hamilton Jazzmaster Open Heart AutovsSpinnaker Croft Mid-Size Skeleton

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Jazzmaster Open Heart Auto
HamiltonJazzmaster Open Heart Auto
MSRP $2,695
Croft Mid-Size Skeleton
SpinnakerCroft Mid-Size Skeleton
MSRP $425

At a glance

11 of 29 specs differ
Diameter
Jazzmaster Open Heart Auto36mm
Croft Mid-Size Skeleton40mm
Power Reserve
Jazzmaster Open Heart Auto80h
Croft Mid-Size Skeleton40h
Water Resistance
Jazzmaster Open Heart Auto50m
Croft Mid-Size Skeleton100m
MSRP
Jazzmaster Open Heart Auto$2,695
Croft Mid-Size Skeleton$425

Full specifications

Case

7 specs
Category
Chronograph
Field
Diameter
36mm
40mm
Thickness
10mm
14mm
Lug-to-Lug
46mm
47mm
Lug Width
18mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
50m
100m

Crystal & Dial

1 specs
Dial Color
Mother of pearl
Dollar Diver

Movement

2 specs
Caliber
H-10
SII NH38A
Power Reserve
80h
40h

Pricing

1 specs
MSRP
$2,695
$425

Follow this matchup

Get a note when Hamilton Jazzmaster Open Heart Auto vs Spinnaker Croft Mid-Size Skeleton gets more votes, a community discussion, or a price drop. No account needed.

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Hamilton Jazzmaster Open Heart Auto

The Hamilton Jazzmaster Open Heart Auto is noted for its dressy yet versatile design, featuring striking gradient dials and intricately shaped cutouts that reveal the H-10 movement. It boasts an 80-hour power reserve and Nivachron hairspring. The watch is available in 36mm, 40mm, or 42mm stainless steel cases. On balance, the Hamilton Jazzmaster Open Heart Auto is appreciated for its visually engaging dial and movement display at its price point.

From video reviewers

The smoked dial's precision cutouts offer a captivating view of the automatic movement. Legibility is compromised by the open-heart design.

Spinnaker Croft Mid-Size Skeleton

The Spinnaker Croft Mid-Size Skeleton is noted for its 40mm steel case, sapphire crystal, and 150m water resistance. One owner reports strong performance from the TMI NH70 movement at -3 seconds per day, with very nice lume. On balance, owners find the Spinnaker Croft Mid-Size Skeleton to be a pretty nice option, particularly for its movement performance and lume.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.