Side by side

Oak & Oscar The Humboldt ExP-02vsHamilton Khaki Field Mechanical

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
Khaki Field Mechanical
HamiltonKhaki Field Mechanical
MSRP $725

At a glance

17 of 29 specs differ
Diameter
The Humboldt ExP-0239.5mm
Khaki Field Mechanical36mm
Power Reserve
The Humboldt ExP-0256h
Khaki Field Mechanical80h
Water Resistance
The Humboldt ExP-02200m
Khaki Field Mechanical100m
MSRP
The Humboldt ExP-02$2,400
Khaki Field Mechanical$725

Full specifications

Case

8 specs
Category
Tool
Field
Diameter
39.5mm
36mm
Thickness
12.4mm
10.2mm
Lug-to-Lug
46.8mm
46mm
Lug Width
20mm
18mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
200m
100m
Caseback
Display
Solid

Crystal & Dial

4 specs
Crystal
Sapphire
Acrylic
Crystal Shape
Double-domed
Flat
Dial Color
Grey
Black
Lume
Super-LumiNova BGW9
None

Movement

4 specs
Caliber
Sellita SW300
H-50
Type
Automatic
Manual
Power Reserve
56h
80h
Complications
GMT, Chronograph
None

Pricing

1 specs
MSRP
$2,400
$725

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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.

Hamilton Khaki Field Mechanical

Owners widely praise the Hamilton Khaki Field Mechanical as an archetype of a field watch, highlighting its thin case, excellent finishing, and smooth winding action, with some calling it the best pure field watch available. The daily winding ritual is considered a charming aspect of ownership, and the branding is noted as tasteful and subtle. One owner specifically appreciates the lugs. A drawback cited is the highly reflective, non-AR-coated crystal, and accuracy ranges from -6 seconds per day to unspecified better performance. Overall, owners rate the Hamilton Khaki Field Mechanical highly for its rugged, all-business aesthetic and value as a quintessential field watch.

From video reviewers

The watch's pure field style design is a significant strength. The lume brightness is a shared weakness. Reviewers disagreed on the power reserve, with one stating 80 hours and another 46 hours.

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