Side by side

Oak & Oscar The Humboldt ExP-02vsZelos Blacktip 41

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
Blacktip 41
ZelosBlacktip 41
MSRP $499

At a glance

13 of 29 specs differ
Diameter
The Humboldt ExP-0239.5mm
Blacktip 4141mm
Power Reserve
The Humboldt ExP-0256h
Blacktip 4140h
Water Resistance
The Humboldt ExP-02200m
Blacktip 41200m
MSRP
The Humboldt ExP-02$2,400
Blacktip 41$499

Full specifications

Case

5 specs
Category
Tool
Diver
Diameter
39.5mm
41mm
Thickness
12.4mm
12mm
Lug-to-Lug
46.8mm
41mm
Caseback
Display
Solid

Crystal & Dial

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

Movement

3 specs
Caliber
Sellita SW300
Miyota 9015
Power Reserve
56h
40h
Complications
GMT, Chronograph
None

Pricing

1 specs
MSRP
$2,400
$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 Blacktip 41

The Zelos Blacktip 41 is widely praised for its exceptional quality and value, featuring a titanium case, sapphire crystal, and a reliable Miyota 9015 movement. Owners and reviewers highlight its well-proportioned 41mm case with strong ergonomics, a 47.5mm lug-to-lug, and a 11.5mm thickness, making it a comfortable diver for many. The watch boasts eye-catching dials with grained textures and degrade effects, complemented by large applied indices, a lume-filled crown, and strong two-tone lume. The bezel action is described as having firm clicks with a slight return. The Miyota 9015 movement provides near-COSC accuracy and a 200m water resistance. On balance, owners and reviewers rate the Zelos Blacktip 41 highly for its superb value and well-executed dive watch features at its price point.

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