Side by side

Oak & Oscar The Humboldt ExP-02vsSpinnaker Dumas GMT

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
Dumas GMT
SpinnakerDumas GMT
MSRP $399

At a glance

14 of 29 specs differ
Diameter
The Humboldt ExP-0239.5mm
Dumas GMT44mm
Power Reserve
The Humboldt ExP-0256h
Dumas GMT40h
Water Resistance
The Humboldt ExP-02200m
Dumas GMT300m
MSRP
The Humboldt ExP-02$2,400
Dumas GMT$399

Full specifications

Case

7 specs
Category
Tool
GMT
Diameter
39.5mm
44mm
Thickness
12.4mm
15mm
Lug-to-Lug
46.8mm
48mm
Lug Width
20mm
22mm
Water Resistance
200m
300m
Caseback
Display
Solid

Crystal & Dial

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

Movement

3 specs
Caliber
Sellita SW300
Seiko NH34A
Power Reserve
56h
40h
Complications
GMT, Chronograph
None

Pricing

1 specs
MSRP
$2,400
$399

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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.

Spinnaker Dumas GMT

Owners praise the Spinnaker Dumas GMT's satisfying lume, including on the crown, and good finishing, with one owner finding it wears well on a 17cm wrist. The watch features a Seiko NH34A GMT movement and a blue gradient dial. Reviewers note its 44mm diameter and 209g weight on the bracelet make it unsuitable for smaller wrists.

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