Glycine Airman SST 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.

Glycine Airman SST GMT at true scale

Airman SST GMT

Spinnaker Dumas GMT at true scale

Dumas GMT

Diameter

43mm

44mm

Lug-to-Lug

n/a

48mm

Thickness

11.6mm

lowest

15mm

Water Resistance

200m

300m

highest

Power Reserve

48h

n/a

MSRP

$905

$399

lowest

Movement

Sellita SW330-2

Seiko NH34

Case

7 specs
Diameter
43mm
44mm
Thickness
11.6mm
15mm
Lug-to-Lug
n/a
48mm
Material
Stainless Steel
316L Stainless Steel
Finish
n/a
n/a
Water Resistance
200m
300m
Caseback
n/a
n/a

Crystal & Dial

5 specs
Crystal Shape
n/a
n/a
AR Coating
n/a
n/a
Dial Color
Grey
Blue
Indices
n/a
n/a
Lume
Luminous
None

Movement

5 specs
Caliber
Sellita SW330-2
Seiko NH34
Beat Rate
28,800 vph
0 vph
Power Reserve
48h
0h
Jewels
25
0
Complications
GMT, Date
None

Pricing

1 specs
MSRP
$905
$399
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Reviews

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

Glycine Airman SST GMT

Owners widely praise the Glycine Airman SST GMT for its comfortable wear, good build quality, accuracy, lume, historical significance, and ingenious GMT movement. The 24-hour dial and compressor-style GMT ring are highlighted as great features, and the watch is noted for keeping good time. Some owners expect Glycine branding on the Sellita SW330-2 movement rotor, and one owner experienced the watch stopping after a day on a winder with a rattling rotor, suggesting a service. The dial is considered busy by some, and it is harder to purchase than some alternatives. Overall, owners rate the Glycine Airman SST GMT highly for its comfortable wear and historical significance as a descendant of the original Airman.

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.