Side by side

Oak & Oscar The Humboldt ExP-02vsSartory Billard SB04-E

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.

Sartory Billard SB04-E

The Sartory Billard SB04-E is widely praised for its impressive and deep dials, with one owner highlighting the unreal, moving appearance of the blue guilloché. Reviewers note its sensible 39.5mm wearability and composition that looks more expensive than its price, with customization options also called out as a key strength. The La Joux-Perret G101 automatic movement powers the watch, offering a 68-hour power reserve. Some owners point out that the caseback has slightly sharp edges and the crystal could be more domed. On balance, owners and reviewers rate the Sartory Billard SB04-E highly for its visually striking dials and overall value proposition.

At a glance

15 of 29 specs differ
Diameter
The Humboldt ExP-0239.5mm
SB04-E39.5mm
Power Reserve
The Humboldt ExP-0256h
SB04-E68h
Water Resistance
The Humboldt ExP-02200m
SB04-E100m
MSRP
The Humboldt ExP-02$2,400
SB04-E$3,100

Full specifications

Case

6 specs
Category
Tool
Dress
Thickness
12.4mm
10.3mm
Lug-to-Lug
46.8mm
46mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
200m
100m
Caseback
Display

Crystal & Dial

4 specs
Crystal Shape
Double-domed
AR Coating
Yes
Dial Color
Grey
Indices
Applied

Movement

4 specs
Caliber
Sellita SW300-1
La Joux-Perret G101
Power Reserve
56h
68h
Jewels
0
24
Complications
GMT, Chronograph
None

Pricing

1 specs
MSRP
$2,400
$3,100
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