Side by side

Fortis Stratoliner S-41vsSeiko Prospex LX line

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 LX line
SeikoProspex LX line
MSRP $6,500

At a glance

15 of 29 specs differ
Diameter
Stratoliner S-4141mm
Prospex LX line44.8mm
Power Reserve
Stratoliner S-4160h
Prospex LX line72h
Water Resistance
Stratoliner S-41200m
Prospex LX line300m
MSRP
Stratoliner S-41$5,450
Prospex LX line$6,500

Full specifications

Case

7 specs
Category
Chronograph
Diver
Diameter
41mm
44.8mm
Thickness
14mm
15.7mm
Lug-to-Lug
50.9mm
Lug Width
21mm
22mm
Material
Stainless Steel
Titanium
Water Resistance
200m
300m

Crystal & Dial

3 specs
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
White
Black
Lume
None
LumiBrite on hands and index(es)

Movement

4 specs
Caliber
Manufacture Caliber WERK 17
5R65
Type
Automatic
Spring Drive
Power Reserve
60h
72h
Jewels
36
30

Pricing

1 specs
MSRP
$5,450
$6,500

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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 LX line

Owners widely report the Seiko Prospex LX line's finishing is a step up from other models, with a case that sits well on the wrist, and some praise the green sunburst dial with blue anti-reflective sapphire crystal as phenomenal. However, owners note the high MSRP limited sales, with some desiring smaller cases and a reduced price, and others experienced quality control issues such as detached second hands and peeling DLC coating, leading to concerns about fragility. On balance, owners feel the Seiko Prospex LX line was discontinued due to pricing that alienated its target market, despite its attractive dial.

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