Side by side

Citizen Corso DiamondvsMarathon GPQ (General Purpose Quartz) Field Watch

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

Corso Diamond
CitizenCorso Diamond
MSRP $521
GPQ (General Purpose Quartz) Field Watch
MarathonGPQ (General Purpose Quartz) Field Watch
MSRP $420

At a glance

11 of 29 specs differ
Diameter
Corso Diamond40mm
GPQ (General Purpose Quartz) Field Watch34mm
Power Reserve
Corso Diamond40h
GPQ (General Purpose Quartz) Field Watch40h
Water Resistance
Corso Diamond100m
GPQ (General Purpose Quartz) Field Watch30m
MSRP
Corso Diamond$521
GPQ (General Purpose Quartz) Field Watch$420

Full specifications

Case

7 specs
Category
Dress
Field
Diameter
40mm
34mm
Thickness
12mm
11.5mm
Lug-to-Lug
46mm
41mm
Lug Width
20mm
16mm
Material
Stainless Steel
Fibreshell Composite
Water Resistance
100m
30m

Crystal & Dial

1 specs
Crystal
Mineral
Acrylic

Movement

2 specs
Caliber
E111
Swiss High-Torque Quartz (3J, EOL)
Type
Solar
Quartz

Pricing

1 specs
MSRP
$521
$420

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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.

Citizen Corso Diamond

The Citizen Corso Diamond is widely praised for its attractive dial, with owners highlighting its sunburst silver or blue finishes and light-catching qualities. Its reliable Eco-Drive movement, offering solar-powered, maintenance-free operation, is a significant draw, as is its value proposition compared to higher-end brands. Owners also appreciate the sapphire crystal for its scratch resistance and the watch's overall sturdy, well-built feel. Some find the 41mm case size and 44-46mm lug-to-lug comfortable for daily wear, noting a 70s statement feel or Genta-inspired look, while others consider it too large or awkward on smaller wrists. Mixed opinions exist regarding the polished case finish, with some finding it too shiny and others praising its immaculate finishing. The band's lining has been described as unpleasant by some, and one owner noted inconsistent seconds hand alignment and a small date window.

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.

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