Serica Ref. 8315 Travel ChronometervsJack Mason Strat-o-timer 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.

Serica Ref. 8315 Travel Chronometer at true scale

Ref. 8315 Travel Chronometer

Jack Mason Strat-o-timer GMT at true scale

Strat-o-timer GMT

Diameter

39mm

40mm

Lug-to-Lug

46.5mm

lowest

47mm

Thickness

12.3mm

lowest

13.2mm

Water Resistance

200m

200m

Power Reserve

42h

42h

MSRP

$2,479

$1,099

lowest

Movement

Soprod C125

Miyota 9075

Case

3 specs
Diameter
39mm
40mm
Thickness
12.3mm
13.2mm
Lug-to-Lug
46.5mm
47mm

Crystal & Dial

3 specs
AR Coating
Yes
n/a
Dial Color
GMT - Enamel Black
n/a
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
Soprod C125
Miyota 9075
Complications
GMT, COSC
None

Pricing

1 specs
MSRP
$2,479
$1,099
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Reviews

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

Serica Ref. 8315 Travel Chronometer

Owners and reviewers praise the Serica Ref. 8315 Travel Chronometer for its unique neo-vintage aesthetic, comfortable 39mm size, and distinctive day/night bezel design. The Soprod C125 automatic movement is noted, with a 40-hour power reserve. Some find the mirrored 12-hour bezel less practical than a traditional 24-hour bezel, and the lack of a date function is a drawback for some. The aggressive taper of the leather strap and its lug-to-lug distance of 46.5mm are also points of discussion. Overall, owners and reviewers appreciate the Serica Ref. 8315 Travel Chronometer for its distinctive design and comfortable wearability, despite some functional trade-offs.

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.

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