Side by side

Oak & Oscar The Humboldt ExP-02vsLongines SPIRIT PILOT

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
SPIRIT PILOT
LonginesSPIRIT PILOT
MSRP $3,100

At a glance

21 of 29 specs differ
Diameter
The Humboldt ExP-0239.5mm
SPIRIT PILOT39mm
Power Reserve
The Humboldt ExP-0256h
SPIRIT PILOT72h
Water Resistance
The Humboldt ExP-02200m
SPIRIT PILOT100m
MSRP
The Humboldt ExP-02$2,400
SPIRIT PILOT$3,100

Full specifications

Case

8 specs
Category
Tool
Pilot
Diameter
39.5mm
39mm
Thickness
12.4mm
11.5mm
Lug-to-Lug
46.8mm
47.2mm
Material
316L Stainless Steel
Stainless Steel
Finish
Brushed and polished
Water Resistance
200m
100m
Caseback
Display
Screw-down case back

Crystal & Dial

5 specs
Crystal Shape
Double-domed
AR Coating
Inner
Both sides
Dial Color
Grey
Black
Indices
Applied
Applied Arabic numerals
Lume
Super-LumiNova BGW9
Super-LumiNova

Movement

7 specs
Caliber
Sellita SW300
L888.4
Beat Rate
28,800 vph
25,200 vph
Power Reserve
56h
72h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
GMT, Chronograph
Hours, minutes, seconds

Pricing

1 specs
MSRP
$2,400
$3,100

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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.

Longines SPIRIT PILOT

Owners widely praise the Longines Spirit Pilot for its exceptional finishing, featuring sharp edges and crisp transitions, and its improved wearability thanks to a reduced 39mm case size and 47.2mm lug-to-lug distance. Reviewers and owners alike highlight the clean, balanced dial with gilt-toned accents that play with light, and its excellent legibility and lume. The L888.4 automatic movement is noted for its 72-hour power reserve and COSC certification. Some owners feel the Longines Spirit Pilot wears larger than its 39mm diameter and express disappointment over the removal of the five stars from the dial, while others find its bracelet endlinks long and lament the lack of quick-release. One owner voices concern over the serviceability of exclusive movements. Overall, owners rate the Longines Spirit Pilot highly for its modern icon status and value, feeling it wears more expensively than its price point suggests.

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