Side by side

Fortis Stratoliner S-41vsSpinnaker Dumas GMT

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
Dumas GMT
SpinnakerDumas GMT
MSRP $399

At a glance

12 of 29 specs differ
Diameter
Stratoliner S-4141mm
Dumas GMT44mm
Power Reserve
Stratoliner S-4160h
Dumas GMT40h
Water Resistance
Stratoliner S-41200m
Dumas GMT300m
MSRP
Stratoliner S-41$5,450
Dumas GMT$399

Full specifications

Case

7 specs
Category
Chronograph
GMT
Diameter
41mm
44mm
Thickness
14mm
15mm
Lug-to-Lug
48mm
Lug Width
21mm
22mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
300m

Crystal & Dial

1 specs
Dial Color
White
Blue

Movement

3 specs
Caliber
Manufacture Caliber WERK 17
Seiko NH34A
Power Reserve
60h
40h
Jewels
36
25

Pricing

1 specs
MSRP
$5,450
$399

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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.

Spinnaker Dumas GMT

Owners praise the Spinnaker Dumas GMT's satisfying lume, including on the crown, and good finishing, with one owner finding it wears well on a 17cm wrist. The watch features a Seiko NH34A GMT movement and a blue gradient dial. Reviewers note its 44mm diameter and 209g weight on the bracelet make it unsuitable for smaller wrists.

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