Side by side

Marathon GPQ (General Purpose Quartz) Field WatchvsGrand Seiko SBGM221

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
SBGM221
Grand SeikoSBGM221
MSRP $5,400

At a glance

12 of 29 specs differ
Diameter
GPQ (General Purpose Quartz) Field Watch34mm
SBGM22139.5mm
Power Reserve
GPQ (General Purpose Quartz) Field Watch40h
SBGM22172h
Water Resistance
GPQ (General Purpose Quartz) Field Watch30m
SBGM22130m
MSRP
GPQ (General Purpose Quartz) Field Watch$420
SBGM221$5,400

Full specifications

Case

6 specs
Category
Field
GMT
Diameter
34mm
39.5mm
Thickness
11.5mm
13.7mm
Lug-to-Lug
41mm
46.9mm
Lug Width
16mm
19mm
Material
Fibreshell Composite
Stainless Steel

Crystal & Dial

2 specs
Crystal
Acrylic
Sapphire
AR Coating
Inner
Yes

Movement

3 specs
Caliber
Swiss High-Torque Quartz (3J, EOL)
9S66
Type
Quartz
Automatic
Power Reserve
40h
72h

Pricing

1 specs
MSRP
$420
$5,400

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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 SBGM221

Grand Seiko SBGM221 is widely praised for its exceptional dial finish, highly polished hands and indices, and elegant design. Owners consistently highlight the stunning craftsmanship, with specific mention of the up to 11 hand-polished facets on its rectangular markers. The reliable 9S66 movement is noted for its 72-hour power reserve and true GMT functionality, tested beyond Chronometer specifications. Some enthusiasts desire a bidirectional 24-hour bezel, which the Grand Seiko SBGM221 lacks, and its 13.7mm thickness and 19mm lug width are noted as potential limitations. On balance, owners rate the Grand Seiko SBGM221 highly for its exquisite finishing and elegant, comfortable design.

From video reviewers

The SBGM221 is praised for its value within the Grand Seiko lineup. The lug width is cited as a weakness.

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