Side by side

Bremont Supermarine ChronovsHamilton Jazzmaster Open Heart Auto

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

Supermarine Chrono
BremontSupermarine Chrono
MSRP $6,850
Jazzmaster Open Heart Auto
HamiltonJazzmaster Open Heart Auto
MSRP $2,695

At a glance

10 of 29 specs differ
Diameter
Supermarine Chrono43mm
Jazzmaster Open Heart Auto36mm
Power Reserve
Supermarine Chrono40h
Jazzmaster Open Heart Auto80h
Water Resistance
Supermarine Chrono300m
Jazzmaster Open Heart Auto50m
MSRP
Supermarine Chrono$6,850
Jazzmaster Open Heart Auto$2,695

Full specifications

Case

6 specs
Diameter
43mm
36mm
Thickness
15.87mm
10mm
Lug-to-Lug
46mm
Lug Width
22mm
18mm
Material
Stainless Steel (DLC coated)
Stainless Steel
Water Resistance
300m
50m

Crystal & Dial

1 specs
Dial Color
Black
Mother of pearl

Movement

2 specs
Caliber
BE-50AE
H-10
Power Reserve
40h
80h

Pricing

1 specs
MSRP
$6,850
$2,695

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What people say

Owners + reviewers, side by side

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

Bremont Supermarine Chrono

The Bremont Supermarine Chrono's black dial and understated bezel markings allow it to transition effectively from rugged use to evening events. On balance, owners and reviewers find the Bremont Supermarine Chrono to be a handsome and functional watch, with its versatile dial design being a key strength.

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.

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