Spinnaker Fleuss 40 AutomaticvsVenezianico Nereide 39 - 3121503C
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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

Nereide 39 - 3121503C
Diameter
40mm
39mm
Lug-to-Lug
47mm
45.5mm
lowest
Thickness
11mm
n/a
Water Resistance
150m
200m
highest
MSRP
$450
lowest
$654
Movement
Seiko NH35
Seiko NH35
Case
6 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 Venezianico Nereide 39 - 3121503C's striking mother-of-pearl blue dial and the impressive, crisp action of its tungsten bezel. The 39mm case is noted for its elegant wearability and consistent finishing, with one owner comparing its quality favorably to TAG Heuer. However, lume is considered weak, and the bracelet's taper from 20mm to 16mm lacks micro-adjustment, making resizing difficult for some. Accuracy varies, with reports of +3 seconds per day and one instance of 30 seconds per day fast, though the manufacturer's standard is ±11 seconds per day. The NH35 movement is mentioned as a point of criticism by one reviewer, while another notes the bezel can dirty easily. Overall, owners rate the Venezianico Nereide 39 - 3121503C highly for its exceptional dial and bezel aesthetics and overall build quality at its price point.
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