Side by side

Oak & Oscar The Humboldt ExP-02vsHamilton Khaki Field Auto Chrono

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 Auto Chrono
HamiltonKhaki Field Auto Chrono
MSRP $2,175

At a glance

14 of 29 specs differ
Diameter
The Humboldt ExP-0239.5mm
Khaki Field Auto Chrono42mm
Power Reserve
The Humboldt ExP-0256h
Khaki Field Auto Chrono60h
Water Resistance
The Humboldt ExP-02200m
Khaki Field Auto Chrono100m
MSRP
The Humboldt ExP-02$2,400
Khaki Field Auto Chrono$2,175

Full specifications

Case

7 specs
Category
Tool
Chronograph
Diameter
39.5mm
42mm
Thickness
12.4mm
14.5mm
Lug-to-Lug
46.8mm
46mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
200m
100m
Caseback
Display
Solid

Crystal & Dial

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

Movement

3 specs
Caliber
Sellita SW300
H-21
Power Reserve
56h
60h
Complications
GMT, Chronograph
None

Pricing

1 specs
MSRP
$2,400
$2,175

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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 Auto Chrono

The Hamilton Khaki Field Auto Chrono is widely praised for its retro military design, value proposition, and reliable ETA movement. Reviewers highlight its 42mm steel case, 100m water resistance, and the H-21 automatic movement offering a 60-hour power reserve. One editorial review notes the unusual dial layout omits a running seconds indicator for symmetry, featuring day and date windows instead. The case is described as black PVD-treated stainless steel with a brushed finish and polished bezel, complemented by a black-on-black dial with dark grey Super-LumiNova and polished Arabic numerals. Overall, owners and reviewers consider the Hamilton Khaki Field Auto Chrono a well-designed tactical sports watch offering a strong combination of style and value.

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