Omega Seamaster Railmaster Co Axial Master Chronometer 38mmvsSmiths Trans-Global

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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.

Omega Seamaster Railmaster Co Axial Master Chronometer 38mm at true scale

Seamaster Railmaster Co Axial Master Chronometer 38mm

Smiths Trans-Global at true scale

Trans-Global

Diameter

38mm

38mm

Lug-to-Lug

44.9mm

lowest

46.8mm

Thickness

12.4mm

12.3mm

lowest

Water Resistance

150m

highest

100m

Power Reserve

55h

n/a

MSRP

$5,800

n/a

Movement

Omega 8806

Miyota 9039

Case

5 specs
Thickness
12.36mm
12.3mm
Lug-to-Lug
44.92mm
46.75mm
Lug Width
19mm
n/a
Finish
Steel
n/a
Water Resistance
150m
100m

Crystal & Dial

2 specs
Crystal Shape
Domed
n/a
Dial Color
Gray
Aventurine

Movement

4 specs
Caliber
Omega 8806
Miyota 9039
Power Reserve
55h
n/a
Hacking
Yes
No
Hand-winding
Yes
No

Pricing

1 specs
MSRP
$5,800
n/a
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Reviews

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

Omega Seamaster Railmaster Co Axial Master Chronometer 38mm

Owners widely praise the Omega Seamaster Railmaster Co Axial Master Chronometer 38mm as an underrated, grail-worthy tool watch with excellent anti-magnetism and rugged build quality. Reviewers highlight its vintage-inspired design and wearable 38mm case size, with one owner noting it keeps time at +1.5 seconds per day. The watch features Omega's 8806 automatic movement, 150m water resistance, and a 15,000 Gauss anti-magnetism rating. Some owners and reviewers express a desire for a version without faux patina, and a few find the clasp on the bracelet large or wish for a thinner case. On balance, owners and reviewers rate the Omega Seamaster Railmaster Co Axial Master Chronometer 38mm highly for its blend of vintage aesthetics, modern technology, and robust tool-watch capabilities.

Smiths Trans-Global

Smiths TRANS-GLOBAL owners widely praise its appearance, with multiple dial colors available and the aventurine dial specifically noted for its stunning, starry-sky effect. The beads-of-rice bracelet is considered exceptionally comfortable, even compared to luxury brands, and the 38mm case is generally well-received for its wearability, though one owner wished for a smaller 34-36mm option. The Miyota 9039 movement's accuracy varies, with one report of +12 seconds per day requiring regulation and another noting perfect timekeeping on a timegrapher. Some owners report sharp edges on the case and a clasp that could be improved, while one noted a "ghost movement" of the seconds hand when setting the time, though this is suggested to be common across brands. On balance, owners rate the Smiths TRANS-GLOBAL highly for its attractive design and comfortable bracelet, despite minor concerns regarding case finishing and movement regulation.