Side by side

Marathon GPQ (General Purpose Quartz) Field WatchvsSeiko Prospex SPEEDTIMER

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
Prospex SPEEDTIMER
SeikoProspex SPEEDTIMER
MSRP $725

At a glance

13 of 29 specs differ
Diameter
GPQ (General Purpose Quartz) Field Watch34mm
Prospex SPEEDTIMER39mm
Power Reserve
GPQ (General Purpose Quartz) Field Watch40h
Prospex SPEEDTIMER40h
Water Resistance
GPQ (General Purpose Quartz) Field Watch30m
Prospex SPEEDTIMER100m
MSRP
GPQ (General Purpose Quartz) Field Watch$420
Prospex SPEEDTIMER$725

Full specifications

Case

7 specs
Category
Field
Chronograph
Diameter
34mm
39mm
Thickness
11.5mm
13.3mm
Lug-to-Lug
41mm
45.5mm
Lug Width
16mm
20mm
Material
Fibreshell Composite
Stainless Steel
Water Resistance
30m
100m

Crystal & Dial

4 specs
Crystal
Acrylic
Sapphire
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Lume
None
LumiBrite on hands and index(es)

Movement

1 specs
Caliber
Swiss High-Torque Quartz (3J, EOL)
V192

Pricing

1 specs
MSRP
$420
$725

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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.

Seiko Prospex SPEEDTIMER

Owners widely praise the Seiko Prospex SPEEDTIMER's gorgeous, unique red dial and vintage-inspired design, finding it a sturdy and reliable everyday watch. Some owners, however, question the value proposition at around $700 for a solar quartz model, citing its 13-15mm thickness and the 24-hour subdial as drawbacks. Accuracy figures vary, with one owner reporting +1/+2 seconds per day, while another notes the V192 solar movement offers a six-month power reserve. Overall, owners and reviewers find the Seiko Prospex SPEEDTIMER a capable and versatile chronograph, with its striking dial and everyday wearability being the most frequently cited strengths.

From video reviewers

The Seiko Prospex SPEEDTIMER's solar movement provides reliable power without battery replacements and accurate timekeeping, with a claimed accuracy of ±15 seconds per month. A notable trade-off is the watch's slightly thicker profile and somewhat lacking lume brightness. Reviewers disagree on whether the bezel action is smooth and clicky, with one reviewer praising it and the other not mentioning it.

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