Spinnaker Dumas AutomaticvsTudor Pelagos FXD Chrono
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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.

Dumas Automatic

Pelagos FXD Chrono
Diameter
44mm
43mm
Lug-to-Lug
48mm
n/a
Thickness
15mm
13.6mm
lowest
Water Resistance
300m
highest
200m
Power Reserve
n/a
70h
MSRP
$239
lowest
$5,875
Movement
Seiko NH35
Tudor MT5813
Case
5 specsCrystal & Dial
1 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
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.
The Tudor Pelagos FXD Chrono is widely praised for its lightweight carbon composite case, making it comfortable and easy to wear, especially on wrists accustomed to smaller watches. Its exceptional legibility, particularly underwater, and the functional bidirectional countdown bezel are highlighted as key strengths for its intended tool-watch purpose. Owners and reviewers note the MT5813 automatic movement's COSC certification and 70-hour power reserve, with accuracy figures ranging from -2 to +4 seconds per day. Some variants, like the Cycling Edition, feature a tachymeter scale, though its practicality for modern cyclists is debated, and water resistance is noted as 100m for these specific models, differing from the 200m of other FXD versions. On balance, owners and reviewers highly rate the Tudor Pelagos FXD Chrono for its robust, lightweight build and excellent legibility, making it a capable tool watch.
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