Side by side

Oak & Oscar The Humboldt ExP-02vsJack Mason Strat-o-timer GMT

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

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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.

Jack Mason Strat-o-timer GMT

Owners widely praise the Jack Mason Strat-o-timer GMT for its impressive fit and finish, excellent value, and true traveler GMT complication, especially considering its price point. Reviewers and owners alike highlight the comfortable 40mm tonneau case, sapphire crystal bezel, and retro styling. Some owners note the hour markers are "chubby" but do not affect legibility, and the strap ends are slightly large. One owner describes the 7-link bracelet as rivaling luxury brands. On balance, owners and reviewers rate the Jack Mason Strat-o-timer GMT highly for its build quality and value proposition.

From video reviewers

The Miyota 9075 true GMT movement is a consistent strength. Reviewers noted the exceptional lightness and comfort due to Grade 2 titanium construction. Opinions on whether further refinements are needed were not shared.

At a glance

14 of 29 specs differ
Diameter
The Humboldt ExP-0239.5mm
Strat-o-timer GMT40mm
Power Reserve
The Humboldt ExP-0256h
Strat-o-timer GMT42h
Water Resistance
The Humboldt ExP-02200m
Strat-o-timer GMT200m
MSRP
The Humboldt ExP-02$2,400
Strat-o-timer GMT$1,099

Full specifications

Case

6 specs
Category
Tool
Diameter
39.5mm
40mm
Thickness
12.4mm
13.2mm
Lug-to-Lug
46.8mm
47mm
Material
316L Stainless Steel
Stainless Steel
Caseback
Display

Crystal & Dial

4 specs
Crystal Shape
Double-domed
Dial Color
Grey
Indices
Applied
Lume
Super-LumiNova BGW9
None

Movement

3 specs
Caliber
Sellita SW300-1
Miyota 9075
Power Reserve
56h
42h
Complications
GMT, Chronograph
None

Pricing

1 specs
MSRP
$2,400
$1,099
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