Side by side

Oak & Oscar The Humboldt ExP-02vsSugess Seestern S434 Pro Diver

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
Seestern S434 Pro Diver
SugessSeestern S434 Pro Diver
MSRP $249

At a glance

13 of 29 specs differ
Diameter
The Humboldt ExP-0239.5mm
Seestern S434 Pro Diver40mm
Power Reserve
The Humboldt ExP-0256h
Seestern S434 Pro Diver40h
Water Resistance
The Humboldt ExP-02200m
Seestern S434 Pro Diver200m
MSRP
The Humboldt ExP-02$2,400
Seestern S434 Pro Diver$249

Full specifications

Case

6 specs
Category
Tool
Diver
Diameter
39.5mm
40mm
Thickness
12.4mm
12mm
Lug-to-Lug
46.8mm
46mm
Material
316L Stainless Steel
Stainless Steel/Rose Gold
Caseback
Display
Engraved

Crystal & Dial

2 specs
Crystal Shape
Double-domed
Flat
Dial Color
Grey
2 Salmon

Movement

4 specs
Caliber
Sellita SW300
NH35
Beat Rate
28,800 vph
3 vph
Power Reserve
56h
40h
Complications
GMT, Chronograph
GMT, Chronograph, Moonphase, Date

Pricing

1 specs
MSRP
$2,400
$249

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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.

Sugess Seestern S434 Pro Diver

Owners widely praise the Sugess Seestern S434 Pro Diver for its impressive finishing and craftsmanship at its price point, highlighting the applied indices that play with light, excellent BGW9 lume, and attractive color options. Specific positive notes include the domed sapphire crystal, short lug-to-lug, and on-the-fly clasp adjustment. However, some owners report quality control issues such as misaligned bezels or indices, while others with V2 models experience no such problems. Caveats include slight bezel back play, light AR coating on the crystal, and a clasp that could be smoother, with one owner desiring a color-matched date wheel. On balance, owners rate the Sugess Seestern S434 Pro Diver highly for its exceptional value and build quality, particularly the dial finishing and lume.

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