Side by side

Fortis Stratoliner S-41vsSeiko Prospex Sea

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

Stratoliner S-41
FortisStratoliner S-41
MSRP $5,450
Prospex Sea
SeikoProspex Sea
MSRP $900

At a glance

12 of 29 specs differ
Diameter
Stratoliner S-4141mm
Prospex Sea41mm
Power Reserve
Stratoliner S-4160h
Prospex Sea70h
Water Resistance
Stratoliner S-41200m
Prospex Sea200m
MSRP
Stratoliner S-41$5,450
Prospex Sea$900

Full specifications

Case

4 specs
Category
Chronograph
Diver
Thickness
14mm
12.3mm
Lug-to-Lug
46.9mm
Lug Width
21mm
20mm

Crystal & Dial

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

Movement

3 specs
Caliber
Manufacture Caliber WERK 17
6R35
Power Reserve
60h
70h
Jewels
36
24

Pricing

1 specs
MSRP
$5,450
$900

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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.

Fortis Stratoliner S-41

Owners widely praise the Fortis Stratoliner S-41 for its purpose-built design and outstanding details, particularly its space blue lume and bright orange date on the dial. Reviewers note the WERK 17 movement offers a 60-hour power reserve. However, the Fortis Stratoliner S-41's 41mm case thickness and lug-to-lug distance lead some to perceive it as wearing large, and the dial's small text and flat design are flagged as potential drawbacks. Overall, owners and reviewers highlight the Fortis Stratoliner S-41's unique design and innovative movement as its primary strengths.

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.

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