Side by side

Marathon GPQ (General Purpose Quartz) Field WatchvsGrand Seiko SBGX355

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

GPQ (General Purpose Quartz) Field Watch
MarathonGPQ (General Purpose Quartz) Field Watch
MSRP $420
SBGX355
Grand SeikoSBGX355
MSRP $4,100

At a glance

11 of 29 specs differ
Diameter
GPQ (General Purpose Quartz) Field Watch34mm
SBGX35537mm
Power Reserve
GPQ (General Purpose Quartz) Field Watch40h
SBGX35540h
Water Resistance
GPQ (General Purpose Quartz) Field Watch30m
SBGX355100m
MSRP
GPQ (General Purpose Quartz) Field Watch$420
SBGX355$4,100

Full specifications

Case

7 specs
Category
Field
Dress
Diameter
34mm
37mm
Thickness
11.5mm
10.6mm
Lug-to-Lug
41mm
44.6mm
Lug Width
16mm
19mm
Material
Fibreshell Composite
Titanium
Water Resistance
30m
100m

Crystal & Dial

2 specs
Crystal
Acrylic
Sapphire
AR Coating
Inner
Yes

Movement

1 specs
Caliber
Swiss High-Torque Quartz (3J, EOL)
9F62

Pricing

1 specs
MSRP
$420
$4,100

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What people say

Owners + reviewers, side by side

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

Marathon GPQ (General Purpose Quartz) Field Watch

Owners widely praise the Marathon GPQ (General Purpose Quartz) Field Watch for its rugged quartz movement, accuracy, and tritium lume. Reviewers and owners alike highlight its solid build, legibility, and comfortable, lightweight wear, making it particularly well-suited for smaller wrists. Some owners, however, consider the price point of $350-420 to be somewhat high. On balance, the consensus is that owners rate the Marathon GPQ (General Purpose Quartz) Field Watch highly for its dependable quartz accuracy and excellent tritium lume.

Grand Seiko SBGX355

The Grand Seiko SBGX355 is widely praised for its beautiful dial, excellent finishing, and perfect 37mm size. Owners report unparalleled accuracy from the 9F62 quartz movement, rated to within 10 seconds per year. The high-intensity titanium case and 100m water resistance are noted features. Some consider the SBGX355 a "baby Snowflake" and a more accessible alternative to other models. Overall, owners and reviewers rate the Grand Seiko SBGX355 highly for its iconic Snowflake dial and exceptional quartz accuracy in a wearable 37mm case.

From video reviewers

The titanium case finishing is a significant strength. The deployant clasp is noted as prone to rattle. Reviewers disagree on the ideal case size for everyday wear.

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