Side by side

Oak & Oscar The Humboldt ExP-02vsZelos Hammerhead V3 300m Titanium

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 V3 300m Titanium
ZelosHammerhead V3 300m Titanium
MSRP $559

At a glance

16 of 29 specs differ
Diameter
The Humboldt ExP-0239.5mm
Hammerhead V3 300m Titanium44mm
Power Reserve
The Humboldt ExP-0256h
Hammerhead V3 300m Titanium40h
Water Resistance
The Humboldt ExP-02200m
Hammerhead V3 300m Titanium300m
MSRP
The Humboldt ExP-02$2,400
Hammerhead V3 300m Titanium$559

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
Ti - Mosaic MOP
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
$559

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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 V3 300m Titanium

The Zelos Hammerhead V3 300m Titanium is widely praised for its exceptional lume, unique and beautiful dial finishing that reflects light dramatically, and solid build quality that exceeds its price point. Owners also highlight its comfortable wearability, especially the lightweight titanium variant, and the convenient on-the-fly micro-adjustment on the bracelet. One owner notes the Japanese movement performs better than anticipated, and the Ti-Damascus variant features a unique, patterned dial and bezel. However, some owners find the 44mm size large, the crown "off," and the bracelet clasp could be more scratch-resistant, with resizing pins described as stubborn. Reattaching the bracelet after removal is also noted as extremely difficult. Overall, owners rate the Zelos Hammerhead V3 300m Titanium highly for its impressive dial aesthetics and value for money.

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