Jack Mason Strat-o-timer GMTvsSeestern BB GMT S436.01 V2

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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.

Jack Mason Strat-o-timer GMT at true scale

Strat-o-timer GMT

Seestern BB GMT S436.01 V2 at true scale

BB GMT S436.01 V2

Diameter

40mm

39mm

Lug-to-Lug

47mm

lowest

48mm

Thickness

13.2mm

12.7mm

lowest

Water Resistance

200m

highest

100m

Power Reserve

42h

n/a

MSRP

$1,099

$240

lowest

Movement

Miyota 9075

Seiko NH34

Case

4 specs
Diameter
40mm
39mm
Thickness
13.2mm
12.7mm
Lug-to-Lug
47mm
48mm
Water Resistance
200m
100m

Movement

2 specs
Caliber
Miyota 9075
Seiko NH34
Power Reserve
42h
0h

Pricing

1 specs
MSRP
$1,099
$240
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Reviews

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

Jack Mason Strat-o-timer GMT

Owners and reviewers widely praise the Jack Mason Strat-o-timer GMT for its excellent value and impressive fit and finish, particularly noting the quality of the 7-link bracelet and the scratch-resistant sapphire bezel insert. The watch is recognized for offering a true traveler's GMT complication with the Miyota 9075 movement at a competitive price point, with many appreciating its comfortable 40mm tonneau case and vintage styling. Some owners find the hour markers to be a bit chunky, and one user noted slightly scratchy crown operation. Overall, owners rate the Jack Mason Strat-o-timer GMT highly for its exceptional value and build quality at its price point.

From video reviewers

The Miyota 9075 true GMT movement is a consistent strength. Reviewers noted the exceptional lightness and comfort due to Grade 2 titanium construction. Opinions on whether further refinements are needed were not shared.

Seestern BB GMT S436.01 V2

Owners widely praise the Seestern BB GMT S436.01 V2 as a modern classic, exceeding expectations at its $170-200 price point, with its blend of modern and vintage styles being a key appeal. The brushing and polishing are excellent, with some preferring its finishing over alternatives. The watch is noted for its detailed finishing, a fully lumed bezel insert with clicky and tactile action, and a secure clasp with micro-adjustment capabilities. Its BGW9 lume is described as a "torch." An owner finds it impressive for multi-timezone travel, functioning as a true GMT. One owner reports minor case marks from strap changes and bracelet swirls on their sparingly worn watch. Overall, owners rate the Seestern BB GMT S436.01 V2 highly for its exceptional finishing and true GMT functionality at an accessible price.