Glycine Airman GMTvsOak & Oscar The Humboldt GMT Titanium
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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.

Airman GMT

The Humboldt GMT Titanium
Diameter
42mm
39.5mm
Lug-to-Lug
n/a
46.8mm
Thickness
12mm
lowest
12.5mm
Water Resistance
100m
200m
highest
Power Reserve
48h
56h
highest
MSRP
$905
lowest
$2,250
Movement
Sellita SW330-2
Sellita SW330-2
Case
8 specsCrystal & Dial
5 specsMovement
4 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Glycine Airman GMT's classic pilot design and consider it a well-made watch. Some owners find the GMT hand visually similar to the minute hand, which can be frustrating. The Sellita-based movement kept acceptable accuracy. On balance, owners and reviewers appreciate the Glycine Airman GMT for its classic pilot design and build quality.
Oak & Oscar The Humboldt GMT Titanium owners praise its exceptional timekeeping, comfortable and lightweight titanium construction, and fit and finish that exceed its price point. The 39.5mm case is noted as suitable for many wrists, though one owner flags its size as a potential drawback. The watch features a Sellita SW330-2 automatic movement and 200m water resistance. Some owners find the orange, blue, and gold dial colors distinct and gorgeous. On balance, owners and reviewers rate Oak & Oscar The Humboldt GMT Titanium highly for its comfortable wearability and impressive finishing at its price.
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