Side by side

Fortis Stratoliner S-41vsSeiko Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition

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

At a glance

15 of 29 specs differ
Diameter
Stratoliner S-4141mm
Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition45.4mm
Power Reserve
Stratoliner S-4160h
Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition72h
Water Resistance
Stratoliner S-41200m
Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition600m
MSRP
Stratoliner S-41$5,450
Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition$4,600

Full specifications

Case

7 specs
Category
Chronograph
Diver
Diameter
41mm
45.4mm
Thickness
14mm
16mm
Lug-to-Lug
50.4mm
Lug Width
21mm
22mm
Material
Stainless Steel
Titanium
Water Resistance
200m
600m

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
8L45
Power Reserve
60h
72h
Jewels
36
35

Pricing

1 specs
MSRP
$5,450
$4,600

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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 Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition

Owners widely praise the Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition's titanium monobloc case construction and the dial's blue gradient finish. Some owners find the 45.4mm diameter and 16mm thickness too large, noting a poor dial-to-bezel ratio and excessive text on the dial. The 8L45 movement offers a 72-hour power reserve, with reported accuracy ranging from +10/-5 seconds per day to +25/-15 seconds per day. On balance, owners appreciate the watch's tool watch vibe and unique dial construction, despite some reservations about its size and price.

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