Oak & Oscar The Humboldt GMTvsSeiko Prospex Land Mechanical 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.

Oak & Oscar The Humboldt GMT at true scale

The Humboldt GMT

Seiko Prospex Land Mechanical GMT at true scale

Prospex Land Mechanical GMT

Diameter

39.5mm

39.5mm

Lug-to-Lug

46.8mm

46.4mm

lowest

Thickness

12.5mm

lowest

13.6mm

Water Resistance

200m

200m

Power Reserve

56h

72h

highest

MSRP

$2,175

$1,150

lowest

Movement

Sellita SW330-2

Seiko 6R54

Case

5 specs
Thickness
12.5mm
13.6mm
Lug-to-Lug
46.8mm
46.4mm
Material
316L Stainless Steel
Stainless Steel
Finish
Brushed
n/a
Caseback
Solid screw-down
n/a

Crystal & Dial

5 specs
Crystal Shape
Double-domed
Curved
AR Coating
Underside
Anti-reflective coating on inner surface
Dial Color
White
n/a
Indices
Applied
n/a
Lume
Super-LumiNova
LumiBrite on hands and index(es)

Movement

4 specs
Caliber
Sellita SW330-2
Seiko 6R54
Beat Rate
4 vph
0 vph
Power Reserve
56 hoursh
72h
Jewels
25
24

Pricing

1 specs
MSRP
$2,175
$1,150
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Reviews

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

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.

Seiko Prospex Land Mechanical GMT

Owners widely praise the Seiko Prospex Land Mechanical GMT for its faithful reconstruction of the 6117 design, its attractive gray dial, and comfortable bracelet. Reviewers highlight its handsome everyday sports watch appeal and classic Seiko diver aesthetics. However, community members are split on the value proposition, with many deeming it overpriced at $970, suggesting a better price point around $700 or on sale. Some owners criticize the 6R54 movement's accuracy, reporting deviations of up to +/- 20 seconds per day, and prefer a local jumping GMT function over the caller style. On balance, owners and reviewers appreciate the Seiko Prospex Land Mechanical GMT's design and wearability, but opinions are divided on its price and movement performance relative to alternatives.

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