Side by side

Oak & Oscar The Humboldt ExP-02vsBoldr Globetrotter 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
Globetrotter GMT
BoldrGlobetrotter GMT
MSRP $469

At a glance

14 of 29 specs differ
Diameter
The Humboldt ExP-0239.5mm
Globetrotter GMT40mm
Power Reserve
The Humboldt ExP-0256h
Globetrotter GMT40h
Water Resistance
The Humboldt ExP-02200m
Globetrotter GMT200m
MSRP
The Humboldt ExP-02$2,400
Globetrotter GMT$469

Full specifications

Case

6 specs
Category
Tool
GMT
Diameter
39.5mm
40mm
Thickness
12.4mm
12.7mm
Lug-to-Lug
46.8mm
48mm
Material
316L Stainless Steel
Stainless Steel
Caseback
Display
Solid

Crystal & Dial

4 specs
Crystal Shape
Double-domed
Flat
AR Coating
Inner
Yes
Dial Color
Grey
GMT Banff
Lume
Super-LumiNova BGW9
Super-LumiNova

Movement

3 specs
Caliber
Sellita SW300
Seiko NH34 GMT
Power Reserve
56h
40h
Complications
GMT, Chronograph
None

Pricing

1 specs
MSRP
$2,400
$469

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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.

Boldr Globetrotter GMT

The Boldr Globetrotter GMT is praised for its legibility and finishing, featuring applied Super-LumiNova indices and sword hands on a matte black or sunburst blue dial. Reviewers highlight the ceramic bezel's sharp city markings and tight, smooth ratcheting action. The 44mm 316L stainless steel case exhibits a non-traditional design with radial and vertical brushing.

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