AVI-8 Flyboy Airmaster GMT AutomaticvsSpinnaker 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.

AVI-8 Flyboy Airmaster GMT Automatic at true scale

Flyboy Airmaster GMT Automatic

Spinnaker Dumas GMT at true scale

Dumas GMT

Diameter

40mm

44mm

Lug-to-Lug

n/a

48mm

Thickness

n/a

15mm

Water Resistance

50m

300m

highest

MSRP

$345

lowest

$399

Movement

Seiko NH34

Seiko NH34

Case

5 specs
Diameter
40mm
44mm
Thickness
n/a
15mm
Lug-to-Lug
n/a
48mm
Lug Width
n/a
22mm
Water Resistance
50m
300m

Crystal & Dial

1 specs
Dial Color
Black
Blue

Pricing

1 specs
MSRP
$345
$399
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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

AVI-8 Flyboy Airmaster GMT Automatic

Owners widely praise the AVI-8 Flyboy Airmaster GMT Automatic for its unique aviator style, robust build, and crisp dial texture, with one owner noting a complex three-timezone function. The watch is considered fun and wearable with solid dimensions, though some find the dial busy and difficult to read, and the stock strap is noted as cheap with limited lug hole options. Some owners question the quality relative to price, while others acknowledge that AVI-8 watches, often featuring Seiko NH34 movements, are generally considered decent for their $100-$200 price point. On balance, owners rate the AVI-8 Flyboy Airmaster GMT Automatic well for its standout aviator design and value at the price.

Spinnaker Dumas GMT

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.

From video reviewers

The Spinnaker Dumas GMT offers robust build quality for its price point. Reviewers noted the 300-meter water resistance.

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