Ginault Trans-AtlanticvsSeiko 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.

Ginault Trans-Atlantic at true scale

Trans-Atlantic

Seiko Prospex Land Mechanical GMT at true scale

Prospex Land Mechanical GMT

Diameter

41mm

39.5mm

Lug-to-Lug

n/a

46.4mm

Thickness

10.3mm

lowest

13.6mm

Water Resistance

n/a

200m

Power Reserve

n/a

72h

MSRP

$1,698

$1,150

lowest

Movement

Sellita SW330-2

Seiko 6R54

Case

4 specs
Diameter
41mm
39.5mm
Thickness
10.35mm
13.6mm
Lug-to-Lug
n/a
46.4mm
Water Resistance
n/a
200m

Crystal & Dial

3 specs
Crystal Shape
n/a
Curved
AR Coating
n/a
Anti-reflective coating on inner surface
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
Sellita SW330-2
Seiko 6R54
Power Reserve
0h
72h
Jewels
0
24

Pricing

1 specs
MSRP
$1,698
$1,150
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Reviews

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

Ginault Trans-Atlantic

Owners widely praise the Ginault Trans-Atlantic's bracelet, describing its fit and finish as superior to other brands and its bezel action as the best they have experienced. The watch is also noted for its comfortable wearability. The Ginault Trans-Atlantic is a 41mm automatic watch with a Sellita SW330-2 movement. Overall, owners rate the Ginault Trans-Atlantic highly for its exceptional bracelet quality and bezel action.

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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