Aigi Watches ARCTIC GMTvsSpinnaker 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.

ARCTIC GMT

Dumas GMT
Diameter
41mm
44mm
Lug-to-Lug
46mm
lowest
48mm
Thickness
11.9mm
lowest
15mm
Water Resistance
200m
300m
highest
Power Reserve
41h
n/a
MSRP
$560
$399
lowest
Movement
Seiko NH34
Seiko NH34
Case
6 specsCrystal & Dial
1 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Aigi Watches ARCTIC GMT is widely praised for its excellent value, particularly at its $250 price point, featuring a Seiko NH34 automatic movement, a box sapphire crystal, and a lumed sapphire bezel. Owners appreciate its semi-original design among NH34 GMTs and the dial's textured triangles that catch the light beautifully. Some users have received watches with a Miyota 9015 movement upgrade, and the sporty look, especially with the rubber strap, is noted as appealing, as is the chance to support an emerging brand. On balance, owners rate the Aigi Watches ARCTIC GMT highly for its aesthetic appeal and strong value proposition.
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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