Edox CO-1 Chronograph AutomaticvsSpinnaker Dumas Automatic

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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.

CO-1 Chronograph Automatic

Dumas Automatic
Diameter
45mm
44mm
Lug-to-Lug
n/a
48mm
Thickness
16mm
15mm
lowest
Water Resistance
500m
highest
300m
MSRP
$3,490
$239
lowest
Movement
Caliber 011 (SW 500)
Seiko NH35
Case
6 specsCrystal & Dial
1 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Edox CO-1 Chronograph Automatic for its robust build, scratch-resistant case and sapphire crystal, and well-assembled Swiss automatic chronograph movement. Reviewers and owners alike note the 45mm case's substantial presence, with some appreciating its modern materials like carbon composite and ceramic bezel, while others find the blue carbon fiber dial and shiny elements distracting. A common point of contention is the clasp, described by some as uncomfortable and by others as a source of wrist discomfort, though the vanilla-scented rubber strap receives positive mentions. One owner reports a minute hand issue that was a simple fix, while another notes six years of ownership with consistent accuracy and durability. Overall, owners and reviewers find the Edox CO-1 Chronograph Automatic to be a well-specified and durably built tool watch, with the primary trade-offs being its large size and divisive clasp design.
Owners widely praise the Spinnaker Dumas Automatic for its robust build quality, attractive textured blue dial, and excellent finishing for its price point. The watch is noted for its comfortable wearability, attributed to a short lug-to-lug distance, and owners report positive experiences with the Seiko NH35 movement. Some owners mention a mineral crystal instead of sapphire, a bracelet with a learning curve, and a crown that feels slightly small. Overall, owners rate the Spinnaker Dumas Automatic highly for its aesthetic appeal and solid construction at a fair price.
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