Side by side

Fortis Stratoliner S-41vsKobold Phantom Black Ops

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
Phantom Black Ops
KoboldPhantom Black Ops
MSRP $6,450
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.

From video reviewers

The Fortis Werk 17 movement—space-tested and manufacture-built—anchors a tank-like tool watch with exceptional lume brightness, anti-reflective dial treatment, and a quality bracelet with quick-adjust clasp. The 41mm case wears considerably larger due to long strut lugs extending to 50.4mm, a utilitarian design choice that dominates wrist presence even on smaller wrists.

Kobold Phantom Black Ops

Owners find the Kobold well-constructed overall, with a serviceable ETA 7750 movement, though one notes the subdials and day/date indicator read surprisingly subdued on the dial. The brand draws mixed feedback on value: multiple owners cite overpricing relative to specs and report poor customer service and managerial issues, though one owner had a positive repair experience. On balance, the Kobold's solid build quality is offset by widespread concern over pricing and inconsistent customer support.

At a glance

10 of 29 specs differ
Diameter
Stratoliner S-4141mm
Phantom Black Ops41mm
Power Reserve
Stratoliner S-4160h
Phantom Black Ops40h
Water Resistance
Stratoliner S-41200m
Phantom Black Ops300m
MSRP
Stratoliner S-41$5,450
Phantom Black Ops$6,450

Full specifications

Case

5 specs
Category
Chronograph
Thickness
14mm
17mm
Lug-to-Lug
46mm
Lug Width
21mm
20mm
Water Resistance
200m
300m

Crystal & Dial

1 specs
Dial Color
White

Movement

3 specs
Caliber
Manufacture Caliber WERK 17
ETA 7750
Power Reserve
60h
40h
Jewels
36
25

Pricing

1 specs
MSRP
$5,450
$6,450
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