Side by side

Oak & Oscar The Humboldt ExP-02vsHamilton Khaki Aviation Air Race Auto

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 Aviation Air Race Auto
HamiltonKhaki Aviation Air Race Auto
MSRP $845

At a glance

15 of 29 specs differ
Diameter
The Humboldt ExP-0239.5mm
Khaki Aviation Air Race Auto38mm
Power Reserve
The Humboldt ExP-0256h
Khaki Aviation Air Race Auto80h
Water Resistance
The Humboldt ExP-02200m
Khaki Aviation Air Race Auto50m
MSRP
The Humboldt ExP-02$2,400
Khaki Aviation Air Race Auto$845

Full specifications

Case

8 specs
Category
Tool
Pilot
Diameter
39.5mm
38mm
Thickness
12.4mm
10.8mm
Lug-to-Lug
46.8mm
46mm
Lug Width
20mm
19mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
200m
50m
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-10
Power Reserve
56h
80h
Complications
GMT, Chronograph
None

Pricing

1 specs
MSRP
$2,400
$845

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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 Aviation Air Race Auto

Owners widely praise the Hamilton Khaki Aviation Air Race Auto for its legibility and practicality, with some appreciating its countdown bezel and GMT pointer. However, opinions on its design are split, with some calling it a "Frankenstein" and disliking the skeleton hands, while others find the hands suitable for a pilot watch. One owner notes the lume is underwhelming and the 44mm size may be too large for some wrists. The original strap is also described as uncomfortable and prone to water stains. On balance, owners value the Hamilton Khaki Aviation Air Race Auto for its legibility and practical features, despite a polarizing design and some comfort concerns.

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