Side by side

Oak & Oscar The Humboldt ExP-02vsZelos Hammerhead (Tantalum LE)

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
Hammerhead (Tantalum LE)
ZelosHammerhead (Tantalum LE)
MSRP $1,499

At a glance

16 of 29 specs differ
Diameter
The Humboldt ExP-0239.5mm
Hammerhead (Tantalum LE)44mm
Power Reserve
The Humboldt ExP-0256h
Hammerhead (Tantalum LE)40h
Water Resistance
The Humboldt ExP-02200m
Hammerhead (Tantalum LE)300m
MSRP
The Humboldt ExP-02$2,400
Hammerhead (Tantalum LE)$1,499

Full specifications

Case

8 specs
Category
Tool
Diver
Diameter
39.5mm
44mm
Thickness
12.4mm
13mm
Lug-to-Lug
46.8mm
44mm
Lug Width
20mm
22mm
Material
316L Stainless Steel
Titanium
Water Resistance
200m
300m
Caseback
Display
Solid

Crystal & Dial

4 specs
Crystal
Sapphire
Domed Sapphire
Crystal Shape
Double-domed
Flat
Dial Color
Grey
Tantalum LE
Lume
Super-LumiNova BGW9
None

Movement

3 specs
Caliber
Sellita SW300
Seiko NH35
Power Reserve
56h
40h
Complications
GMT, Chronograph
None

Pricing

1 specs
MSRP
$2,400
$1,499

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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.

Zelos Hammerhead (Tantalum LE)

The Zelos Hammerhead (Tantalum LE) features a forged carbon dial and bezel insert with infused lume. On balance, owners and reviewers rate the Zelos Hammerhead (Tantalum LE) highly for its unique material composition and substantial feel.

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