Side by side

Oak & Oscar The Humboldt ExP-02vsFortis Stratoliner S-41

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

The Humboldt ExP-02
Oak & OscarThe Humboldt ExP-02
MSRP $2,400
Stratoliner S-41
FortisStratoliner S-41
MSRP $5,450

At a glance

15 of 29 specs differ
Diameter
The Humboldt ExP-0239.5mm
Stratoliner S-4141mm
Power Reserve
The Humboldt ExP-0256h
Stratoliner S-4160h
Water Resistance
The Humboldt ExP-02200m
Stratoliner S-41200m
MSRP
The Humboldt ExP-02$2,400
Stratoliner S-41$5,450

Full specifications

Case

7 specs
Category
Tool
Chronograph
Diameter
39.5mm
41mm
Thickness
12.4mm
14mm
Lug-to-Lug
46.8mm
Lug Width
20mm
21mm
Material
316L Stainless Steel
Stainless Steel
Caseback
Display
Solid

Crystal & Dial

3 specs
Crystal Shape
Double-domed
Flat
Dial Color
Grey
White
Lume
Super-LumiNova BGW9
None

Movement

4 specs
Caliber
Sellita SW300
Manufacture Caliber WERK 17
Power Reserve
56h
60h
Jewels
25
36
Complications
GMT, Chronograph
None

Pricing

1 specs
MSRP
$2,400
$5,450

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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.

Oak & Oscar The Humboldt ExP-02

Oak & Oscar The Humboldt ExP-02 is a 39.5mm stainless steel tool watch featuring a unique, layered aluminum "ghost dial" for legibility and 200m water resistance, powered by a Sellita SW300 movement. Its appeal is limited by a US$2,550 price and an extremely limited production of 20 pieces, with its experimental dial construction done in Chicago. Overall, reviewers highlight the endearing dial and in-house bezel production as key features of the Oak & Oscar Humboldt ExP-02.

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.

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