Erebus Watches Origin 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.

Erebus Watches Origin GMT at true scale

Origin GMT

Seiko Prospex Land Mechanical GMT at true scale

Prospex Land Mechanical GMT

Diameter

41mm

39.5mm

Lug-to-Lug

47mm

46.4mm

lowest

Thickness

12.9mm

lowest

13.6mm

Water Resistance

200m

200m

Power Reserve

n/a

72h

MSRP

n/a

$1,150

Movement

Seiko NH34

Seiko 6R54

Case

3 specs
Diameter
41mm
39.5mm
Thickness
12.9mm
13.6mm
Lug-to-Lug
47mm
46.4mm

Crystal & Dial

4 specs
Crystal Shape
n/a
Curved
AR Coating
n/a
Anti-reflective coating on inner surface
Dial Color
n/a
n/a
Lume
BGW9 Super-LumiNova
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
Seiko NH34
Seiko 6R54
Power Reserve
n/a
72h
Jewels
0
24

Pricing

1 specs
MSRP
n/a
$1,150
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Reviews

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

Erebus Watches Origin GMT

Owners widely praise the Erebus Watches Origin GMT for its exceptional value, build quality, and finishing at its price point, with many highlighting its hyperlegible dial, excellent lume, and comfortable wearability, particularly noting how the case design allows a 41mm watch to wear smaller. The bracelet is frequently lauded for its premium features, including a quick-adjust clasp, and the included rubber straps are also considered supple and comfortable. Accuracy is reported at -2 seconds per day by one owner. Some commenters question the design's originality and manufacturing location, while others find the bezel's flat appearance sterile or criticize sharp edges on bracelet links, though strap options are generally well-received. One reviewer noted a thick case, attributed to the movement and 200m water resistance, and another found the bezel cluttered with extra minute markers.

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.