Side by side

Hamilton Jazzmaster Open Heart AutovsZelos Nova 37

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
Nova 37
ZelosNova 37
MSRP $899

At a glance

12 of 29 specs differ
Diameter
Jazzmaster Open Heart Auto36mm
Nova 3737mm
Power Reserve
Jazzmaster Open Heart Auto80h
Nova 3740h
Water Resistance
Jazzmaster Open Heart Auto50m
Nova 3750m
MSRP
Jazzmaster Open Heart Auto$2,695
Nova 37$899

Full specifications

Case

6 specs
Category
Chronograph
Dress
Diameter
36mm
37mm
Thickness
10mm
7mm
Lug-to-Lug
46mm
37mm
Lug Width
18mm
20mm
Material
Stainless Steel
316L Stainless Steel

Crystal & Dial

2 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
Mother of pearl
Salmon

Movement

3 specs
Caliber
H-10
ETA 7001
Type
Automatic
Manual
Power Reserve
80h
40h

Pricing

1 specs
MSRP
$2,695
$899

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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.

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.

Zelos Nova 37

Owners widely praise the Zelos Nova 37's spectacular 37mm dimensions and extremely light, thin wearability. The meteorite dial is frequently highlighted as a captivating feature, though some reviewers suggest simpler indices would improve legibility over the Arabic numerals. The watch is considered a considerable value at $1,999. On balance, owners and reviewers rate the Zelos Nova 37 highly for its excellent dimensions and dial execution at the price.

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