Hamilton Khaki Navy GMT AutovsSpinnaker Dumas GMT
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.
Khaki Navy GMT Auto
Dumas GMT
Diameter
43mm
44mm
Lug-to-Lug
52mm
48mm
lowest
Thickness
13.9mm
lowest
15mm
Water Resistance
300m
300m
Power Reserve
80h
n/a
MSRP
$1,525
$399
lowest
Movement
Hamilton H-14
Seiko NH34
Case
4 specsCrystal & Dial
1 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Hamilton Khaki Navy GMT Auto for its true GMT function and 80-hour power reserve, with reviewers noting its value at its price point. The 43mm case is described as having a well-finished brushed exterior and a glossy black dial, complemented by smooth crowns and a comfortable rubber strap. Some owners report accuracy around -5 seconds per day, while others note the rotor sound can be loud. The slightly domed sapphire crystal lacks AR coating, and one owner noted minor cosmetic flaws on the case. Overall, owners and reviewers rate the Hamilton Khaki Navy GMT Auto highly for its robust GMT functionality and build quality relative to its cost.
The sapphire crystal is a strength cited by both reviewers. Both reviewers noted the ETA movement as reliable.
The Spinnaker Dumas GMT is praised for its good finishing and satisfying lume, including on the crown. Owners note its 44mm case and 15mm thickness, with one finding it wears well on a 17cm wrist, while a reviewer suggests its substantial size and 209g weight make it unsuitable for smaller wrists. Overall, owners and reviewers find the Spinnaker Dumas GMT offers good value, particularly with the inclusion of an extra rubber strap.
The Spinnaker Dumas GMT offers robust build quality for its price point. Reviewers noted the 300-meter water resistance.
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