Marathon GPQ (General Purpose Quartz) FieldvsSlow Watches Jo
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

GPQ (General Purpose Quartz) Field

Jo
Diameter
34mm
38mm
Lug-to-Lug
41mm
n/a
Thickness
11.5mm
8.2mm
lowest
Water Resistance
30m
100m
highest
MSRP
$420
$319
lowest
Movement
Swiss High-Torque Quartz (3J, EOL)
Ronda 505.24
Case
7 specsCrystal & Dial
2 specsMovement
1 specsPricing
1 specsReviews
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 its legibility, day and night, due to tritium gas tubes on every hour marker. Its small, lightweight 34mm case is noted as comfortable and ideal for smaller wrists, avoiding the bulk of larger watches. The Swiss High-Torque Quartz movement is appreciated for its ruggedness, accuracy, and lack of winding requirement. Some owners find the $350-420 price point a bit high, and one enthusiast considers the 30m water resistance a drawback. Overall, owners rate the Marathon GPQ (General Purpose Quartz) Field Watch highly for its exceptional legibility and comfortable, practical design.
Owners widely praise the Slow Watches Jo as a conversation piece, with many appreciating its unique octagonal case, elegant design, and the relaxing simplicity of its 24-hour dial and single hand. Some owners find the watch ideal for casual wear and its vintage feel ages gracefully. However, multiple owners note that precise timekeeping is impractical due to the dial design, and small digits can require reading glasses. One owner reported a short circuit requiring repair and finicky setting. The brand's website is described as obsolete. Overall, owners rate the Slow Watches Jo highly for its unique design and conversation-starting appeal, despite its impracticality for precise timekeeping.
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