Side by side

Hamilton Jazzmaster Open Heart AutovsVario 1918 Trench Brass

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
1918 Trench Brass
Vario1918 Trench Brass
MSRP $388

At a glance

10 of 29 specs differ
Diameter
Jazzmaster Open Heart Auto36mm
1918 Trench Brass40mm
Power Reserve
Jazzmaster Open Heart Auto80h
1918 Trench Brass40h
Water Resistance
Jazzmaster Open Heart Auto50m
1918 Trench Brass100m
MSRP
Jazzmaster Open Heart Auto$2,695
1918 Trench Brass$388

Full specifications

Case

5 specs
Category
Chronograph
Field
Diameter
36mm
40mm
Lug-to-Lug
46mm
45mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
50m
100m

Crystal & Dial

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

Movement

2 specs
Caliber
H-10
Miyota 82s5
Power Reserve
80h
40h

Pricing

1 specs
MSRP
$2,695
$388

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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.

Vario 1918 Trench Brass

Owners widely praise the Vario 1918 Trench Brass for its attractive, precisely made dial and case, with the evolving brass patina noted as a positive feature. The bund strap is considered comfortable and well-fitting by some, though others find it stiff and short for larger wrists. The lume is considered poor. The Miyota 82s5 movement is described as adequate, with accuracy ranging from about -10 seconds per day to simply running slow. On balance, owners rate the Vario 1918 Trench Brass highly for its fantastic looks and the unique character of its brass case.

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