Side by side

Hamilton Khaki Navy GMT AutovsGruppo Gamma Field III GMT

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

Khaki Navy GMT Auto
HamiltonKhaki Navy GMT Auto
MSRP $1,525
Field III GMT
Gruppo GammaField III GMT
MSRP $459

At a glance

11 of 29 specs differ
Diameter
Khaki Navy GMT Auto43mm
Field III GMT40mm
Power Reserve
Khaki Navy GMT Auto80h
Field III GMT41h
Water Resistance
Khaki Navy GMT Auto300m
Field III GMT200m
MSRP
Khaki Navy GMT Auto$1,525
Field III GMT$459

Full specifications

Case

4 specs
Diameter
43mm
40mm
Thickness
13.9mm
14mm
Lug-to-Lug
52mm
48.5mm
Water Resistance
300m
200m

Crystal & Dial

3 specs
AR Coating
Inner
Yes
Dial Color
Silver
Black
Lume
None
Super-LumiNova

Movement

3 specs
Caliber
H-14
Seiko Instruments NH38A
Power Reserve
80h
41h
Complications
None
GMT

Pricing

1 specs
MSRP
$1,525
$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 Khaki Navy GMT Auto

The Hamilton Khaki Navy GMT Auto is widely praised for its true GMT function and 80-hour power reserve, with owners noting its excellent quality for the price. Reviewers highlight its legible syringe hands and Arabic numerals, well-functioning inner bezel, and comfortable wearability due to its 12.5mm thickness and brushed case finishing. Some owners report minor cosmetic flaws like paint chips or scrapes, and accuracy figures vary, with one owner seeing -5 seconds per day and another noting +5 seconds per 24 hours. The 43mm case is 13.9mm thick, and while some find the slab-sided profile mitigates the perceived height, others note the lug-to-lug measurement can be a stumbling block. The movement is described as nicely decorated, though one owner notes a loud rotor sound, and the lack of AR coating on the sapphire crystal is a drawback for some.

Gruppo Gamma Field III GMT

Owners praise the Gruppo Gamma Field III GMT for its look and value, with specific mentions of its sandwich dial and comfortable OEM straps. One owner notes incredible quality for the price across their Gruppo Gamma watches. The watch features a 40mm brushed stainless steel case, box sapphire crystal, and a Seiko NH34A movement with a 41-hour power reserve and stated accuracy of -20~+40 s/day. Some find the lack of a date window a drawback for a GMT, and question its differentiation from other NH34-powered watches. On balance, owners and reviewers find the Gruppo Gamma Field III GMT to be a good value with quality construction for its price point.

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