Side by side

Fortis Stratoliner S-41vsSeiko Prospex SPEEDTIMER

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 SPEEDTIMER
SeikoProspex SPEEDTIMER
MSRP $750

At a glance

13 of 29 specs differ
Diameter
Stratoliner S-4141mm
Prospex SPEEDTIMER41.4mm
Power Reserve
Stratoliner S-4160h
Prospex SPEEDTIMER40h
Water Resistance
Stratoliner S-41200m
Prospex SPEEDTIMER100m
MSRP
Stratoliner S-41$5,450
Prospex SPEEDTIMER$750

Full specifications

Case

4 specs
Diameter
41mm
41.4mm
Thickness
14mm
13mm
Lug-to-Lug
45.9mm
Water Resistance
200m
100m

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 and index(es)

Movement

4 specs
Caliber
Manufacture Caliber WERK 17
V192
Type
Automatic
Quartz
Power Reserve
60h
40h
Jewels
36
25

Pricing

1 specs
MSRP
$5,450
$750

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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 SPEEDTIMER

Owners widely praise the Seiko Prospex SPEEDTIMER's design, with specific mentions of its beautiful ice blue sundial and compact 39mm case size, which some note wears smaller than its specifications due to a short lug-to-lug distance. Reviewers highlight its racing-inspired aesthetic and versatility, with one owner finding the 39mm solar model a sturdy and reliable everyday watch with 100m water resistance. However, some owners question the value proposition, citing the $700 price for a solar quartz model and a thickness of 13mm, while others expressed a preference for automatic movements. On balance, owners and reviewers appreciate the Seiko Prospex SPEEDTIMER's attractive vintage-inspired design and compact wearability, though some debate its value and thickness for a solar quartz chronograph.

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