Side by side

Hamilton Jazzmaster Slim AutovsGruppo Gamma Field III GMT Date

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

Jazzmaster Slim Auto
HamiltonJazzmaster Slim Auto
MSRP $825
Field III GMT Date
Gruppo GammaField III GMT Date
MSRP $459

At a glance

10 of 29 specs differ
Diameter
Jazzmaster Slim Auto40mm
Field III GMT Date40mm
Power Reserve
Jazzmaster Slim Auto50h
Field III GMT Date41h
Water Resistance
Jazzmaster Slim Auto30m
Field III GMT Date200m
MSRP
Jazzmaster Slim Auto$825
Field III GMT Date$459

Full specifications

Case

4 specs
Category
Dress
GMT
Thickness
8.35mm
14mm
Lug-to-Lug
46mm
48.5mm
Water Resistance
30m
200m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Lume
None
Super-LumiNova

Movement

3 specs
Caliber
No caliber
Seiko Instruments NH38A
Power Reserve
50h
41h
Complications
None
GMT, Date

Pricing

1 specs
MSRP
$825
$459

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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 Slim Auto

The Hamilton Jazzmaster Slim Auto is praised for its elegance, light weight, and impressive leather strap, offering a classy yet engaging aesthetic. Its thin 8mm profile, achieved partly by omitting a seconds hand and utilizing the ETA 2892 movement, contributes to its wearability. However, one owner notes the 44mm case size as being very large, and another finds it less appealing than vintage Hamilton models, though the black dial version is considered better looking. Overall, owners appreciate the Hamilton Jazzmaster Slim Auto for its slim profile and elegant design.

Gruppo Gamma Field III GMT Date

Owners widely praise the Gruppo Gamma Field III GMT Date for its awesome looks, quality, and good value. The watch features a 40mm brushed 316L stainless steel case, box sapphire crystal, and 200m water resistance, powered by a Seiko NH34A movement. Some reviewers note the NH34A movement's accuracy can range from -20~+40 seconds per day, though one reviewer reported +5 seconds per day with a regulated movement. The dial's dense layout with Arabic numerals can be overwhelming for some, and one owner found the size unsuitable for smaller wrists. On balance, owners rate the Gruppo Gamma Field III GMT Date highly for its impressive finishing and toolish design at its price point.

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