Glycine Airman SST GMTvsOak & Oscar The Humboldt 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

Oak & Oscar The Humboldt GMT at true scale

The Humboldt GMT

Diameter

43mm

39.5mm

Lug-to-Lug

n/a

46.8mm

Thickness

11.6mm

lowest

12.5mm

Water Resistance

200m

200m

Power Reserve

48h

56h

highest

MSRP

$905

lowest

$2,175

Movement

Sellita SW330-2

Sellita SW330-2

Case

7 specs
Diameter
43mm
39.5mm
Thickness
11.6mm
12.5mm
Lug-to-Lug
n/a
46.8mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Finish
n/a
Brushed
Caseback
n/a
Solid screw-down

Crystal & Dial

5 specs
Crystal Shape
n/a
Double-domed
AR Coating
n/a
Underside
Dial Color
Grey
White
Indices
n/a
Applied
Lume
Luminous
Super-LumiNova

Movement

3 specs
Beat Rate
28,800 vph
4 vph
Power Reserve
48h
56 hoursh
Complications
GMT, Date
None

Pricing

1 specs
MSRP
$905
$2,175
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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.

Oak & Oscar The Humboldt GMT

Oak & Oscar The Humboldt GMT is praised for its exceptional accuracy, often running at or near 0 seconds per day, and its robust construction quality for the price. Owners highlight the sandwich dial construction with its signature date window and orange accents, along with its anti-magnetic properties. Some find the bracelet sizing adjustment slightly awkward and note the lume could be brighter. On balance, owners and reviewers rate the Oak & Oscar The Humboldt GMT highly for its precise timekeeping and solid build at its price point.

From video reviewers

The Humboldt GMT's sandwich dial and true GMT complication deliver practical traveler functionality in a 40mm brushed stainless steel case with 20ATM water resistance. Swiss-made movement construction with anti-shock and anti-magnetic properties meets tight manufacturing tolerances and rigorous testing standards. Positioning against sub-$2,000 GMT competitors raises questions about value proposition relative to alternatives in this price tier.

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