Side by side

Marathon GPQ (General Purpose Quartz) Field WatchvsGrand Seiko SBGP009

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
SBGP009
Grand SeikoSBGP009
MSRP $3,100

At a glance

11 of 29 specs differ
Diameter
GPQ (General Purpose Quartz) Field Watch34mm
SBGP00940mm
Power Reserve
GPQ (General Purpose Quartz) Field Watch40h
SBGP00940h
Water Resistance
GPQ (General Purpose Quartz) Field Watch30m
SBGP009100m
MSRP
GPQ (General Purpose Quartz) Field Watch$420
SBGP009$3,100

Full specifications

Case

7 specs
Category
Field
Dress
Diameter
34mm
40mm
Thickness
11.5mm
10.6mm
Lug-to-Lug
41mm
47mm
Lug Width
16mm
20mm
Material
Fibreshell Composite
Stainless Steel
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)
9F85

Pricing

1 specs
MSRP
$420
$3,100

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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 SBGP009

Grand Seiko SBGP009 owners note its "normal quartz" movement, and one owner criticizes the bracelet for lacking a taper. One owner cites a 40-year-old Seiko quartz watch that has only required battery changes as evidence of the reliability of Grand Seiko's quartz movements. On balance, owners value the Grand Seiko SBGP009 for its perceived long-term reliability.

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