Spinnaker Fleuss 40 AutomaticvsSan Martin BB58

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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.

Fleuss 40 Automatic

BB58
Diameter
40mm
40mm
Lug-to-Lug
47mm
n/a
Thickness
11mm
n/a
Water Resistance
150m
200m
highest
MSRP
$450
$288
lowest
Movement
Seiko NH35
Seiko NH35
Case
5 specsCrystal & Dial
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Spinnaker Fleuss 40 Automatic is noted as a good size for smaller wrists, with one owner finding it comfortable on a 6.25-inch wrist. However, the lume is considered too diffuse for easy nighttime reading of the hands. The pilot-style crown is an unusual design choice for a dive watch. Overall, owners and reviewers find the Spinnaker Fleuss 40 Automatic to be a well-sized and comfortable watch with a unique crown design.
Owners widely praise the San Martin BB58 as a high-quality BB58 homage that feels premium for the money; one calls it "basically as close as you can get without paying Tudor prices" and another describes it as fantastic quality for the price. Specific highlights include its gorgeous yet masculine look and the on-the-fly adjustable clasp, which one owner says they have not seen matched on any $1k watch. One owner's own San Martin runs within about 6 seconds per day and has never missed a beat. The main criticism is that one owner would like the riveted links and logo changed, and a forum member notes that some advise avoiding these watches without explaining why. Overall, owners rate the San Martin BB58 very highly for its value and finishing, with the clasp and styling cited as the standout reasons.
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