Side by side

Fortis Stratoliner S-41vsHalios Seaforth IV

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
Seaforth IV
HaliosSeaforth IV
MSRP $765

At a glance

12 of 29 specs differ
Diameter
Stratoliner S-4141mm
Seaforth IV40mm
Power Reserve
Stratoliner S-4160h
Seaforth IV40h
Water Resistance
Stratoliner S-41200m
Seaforth IV200m
MSRP
Stratoliner S-41$5,450
Seaforth IV$765

Full specifications

Case

6 specs
Category
Chronograph
Diver
Diameter
41mm
40mm
Thickness
14mm
12.4mm
Lug-to-Lug
46.5mm
Lug Width
21mm
20mm
Material
Stainless Steel
Titanium

Crystal & Dial

2 specs
Crystal
Sapphire
Sapphire (double-domed)
Dial Color
White
Blue

Movement

3 specs
Caliber
Manufacture Caliber WERK 17
Sellita SW200-2
Power Reserve
60h
40h
Jewels
36
25

Pricing

1 specs
MSRP
$5,450
$765

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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.

Halios Seaforth IV

Owners widely praise the Halios Sunburst Blue for its perfect 40mm size, stunning sunburst dial, and excellent lume, with one owner calling it Halios's best effort and a potential "Omega AT killer." The ETA 2824 movement is noted as running smoothly, and the watch is considered a great value with strong resale. Some owners desire larger sizes or different dial colors, and one reviewer found the Sinn 556i more versatile. The sapphire bezel is described as tall and flat, which is a point of contention for some. Overall, owners rate the Halios Sunburst Blue highly for its design, size, and value.

From video reviewers

The sunburst blue dial is a standout feature. Limited water resistance is a shared concern.

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