Side by side

Oak & Oscar The Humboldt ExP-02vsNivada Grenchen Chronomaster Valjoux

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

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.

Nivada Grenchen Chronomaster Valjoux

The Nivada Grenchen Chronomaster is praised for its vintage aesthetic and versatility, with the Aventurine Blue variant offering a unique starry dial and world time bezel. Owners note the sub-dials are small and difficult to read, and the Sellita SW510 movement exhibits rotor wobble and hand play. The $5,000 price point is a significant increase from previous reissues. Overall, owners rate the Nivada Grenchen Chronomaster highly for its vintage aesthetic and unique dial options, despite some concerns about sub-dial legibility and movement characteristics.

At a glance

17 of 29 specs differ
Diameter
The Humboldt ExP-0239.5mm
Chronomaster Valjoux38mm
Power Reserve
The Humboldt ExP-0256h
Chronomaster Valjoux48h
Water Resistance
The Humboldt ExP-02200m
Chronomaster Valjoux100m
MSRP
The Humboldt ExP-02$2,400
Chronomaster Valjoux$5,000

Full specifications

Case

9 specs
Category
Tool
Chronograph
Diameter
39.5mm
38mm
Thickness
12.4mm
12.95mm
Lug-to-Lug
46.8mm
46.5mm
Lug Width
20mm
0mm
Material
316L Stainless Steel
Stainless Steel
Finish
Brushed + Polished
Water Resistance
200m
100m
Caseback
Display
316L Steel Silver Color Open Case back with Sapphire Glass

Crystal & Dial

4 specs
Crystal Shape
Double-domed
Dial Color
Grey
Black
Indices
Applied
Lume
Super-LumiNova BGW9
Super-LumiNova

Movement

3 specs
Caliber
Sellita SW300-1
Valjoux 23
Type
Automatic
Manual
Power Reserve
56h
48h

Pricing

1 specs
MSRP
$2,400
$5,000
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