Side by side

Oak & Oscar The Humboldt ExP-02vsGrand Seiko SBGA481

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
SBGA481
Grand SeikoSBGA481
MSRP $11,100

At a glance

16 of 29 specs differ
Diameter
The Humboldt ExP-0239.5mm
SBGA48144.5mm
Power Reserve
The Humboldt ExP-0256h
SBGA48172h
Water Resistance
The Humboldt ExP-02200m
SBGA481200m
MSRP
The Humboldt ExP-02$2,400
SBGA481$11,100

Full specifications

Case

7 specs
Category
Tool
Diver
Diameter
39.5mm
44.5mm
Thickness
12.4mm
14.3mm
Lug-to-Lug
46.8mm
50mm
Lug Width
20mm
23mm
Material
316L Stainless Steel
Titanium
Caseback
Display
Solid

Crystal & Dial

4 specs
Crystal Shape
Double-domed
Flat
AR Coating
Inner
Yes
Dial Color
Grey
Black
Lume
Super-LumiNova BGW9
None

Movement

4 specs
Caliber
Sellita SW300
9R65
Type
Automatic
Spring Drive
Power Reserve
56h
72h
Complications
GMT, Chronograph
None

Pricing

1 specs
MSRP
$2,400
$11,100

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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.

Grand Seiko SBGA481

Grand Seiko SBGA481 owners praise its light titanium case and sharp finishing, with one owner reporting it runs perfectly. Reviewers describe the SBGA481 as an unapologetically Grand Seiko creation with a unique hour hand and a "geeky, techy vibe" that some find daring. On balance, the consensus is that the Grand Seiko SBGA481 is a fun and daring watch that showcases the brand's distinctive design language.

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