Side by side

Seiko Prospex SeavsSpinnaker Fleuss 40 Automatic

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Prospex Sea
SeikoProspex Sea
MSRP $900
Fleuss 40 Automatic
SpinnakerFleuss 40 Automatic
MSRP $450

At a glance

13 of 29 specs differ
Diameter
Prospex Sea41mm
Fleuss 40 Automatic40mm
Power Reserve
Prospex Sea70h
Fleuss 40 Automatic40h
Water Resistance
Prospex Sea200m
Fleuss 40 Automatic150m
MSRP
Prospex Sea$900
Fleuss 40 Automatic$450

Full specifications

Case

5 specs
Diameter
41mm
40mm
Thickness
12.3mm
11mm
Lug-to-Lug
46.9mm
47mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
150m

Crystal & Dial

4 specs
Crystal Shape
Curved
Flat
AR Coating
Anti-reflective coating on inner surface
Inner
Dial Color
Black
Coral
Lume
LumiBrite on hands, index(es) and bezel
None

Movement

3 specs
Caliber
6R35
SII NH35A
Power Reserve
70h
40h
Jewels
24
25

Pricing

1 specs
MSRP
$900
$450

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Seiko Prospex Sea

Owners widely praise the Seiko Prospex Sea for its excellent lume, robust build, and value, with many highlighting the comfortable 4 o'clock crown and reliable movements. Reviewers note impressive case finishing and attractive dials, with specific models lauded for their gradient blue designs and smooth bezel actions. Accuracy figures vary, with one owner reporting +9 seconds/day after demagnetization, while others find the watches to be good first "proper" watches. Some owners find the stock rubber straps uncomfortable or the overall size substantial on smaller wrists. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its combination of strong dive watch functionality and appealing design at its price point.

Spinnaker Fleuss 40 Automatic

Owners find the Spinnaker Fleuss 40 Automatic a good size for smaller wrists, though one owner notes the lume is too diffuse for easy nighttime reading. The pilot-style crown is an unusual feature for a dive watch. Overall, owners value the Spinnaker Fleuss 40 Automatic for its wearability on smaller wrists.

From video reviewers

The coral red dial is a unique aesthetic. The watch is a strong contender for best-in-class under $300.

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