Side by side

Oak & Oscar The Humboldt ExP-02vsLongines SPIRIT PILOT FLYBACK

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 FLYBACK
LonginesSPIRIT PILOT FLYBACK
MSRP $5,550

At a glance

20 of 29 specs differ
Diameter
The Humboldt ExP-0239.5mm
SPIRIT PILOT FLYBACK39.5mm
Power Reserve
The Humboldt ExP-0256h
SPIRIT PILOT FLYBACK44h
Water Resistance
The Humboldt ExP-02200m
SPIRIT PILOT FLYBACK100m
MSRP
The Humboldt ExP-02$2,400
SPIRIT PILOT FLYBACK$5,550

Full specifications

Case

7 specs
Category
Tool
Pilot
Thickness
12.4mm
13.4mm
Lug-to-Lug
46.8mm
47.4mm
Material
316L Stainless Steel
Ceramic
Finish
Brushed and polished
Water Resistance
200m
100m
Caseback
Display
Screw-down and transparent with sapphire crystal 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
L792.4
Type
Automatic
Manual
Power Reserve
56h
44h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
GMT, Chronograph
Hours, minutes, small seconds at 9 o'clock

Pricing

1 specs
MSRP
$2,400
$5,550

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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 FLYBACK

The Longines Spirit Pilot Flyback is widely praised for its refined 39.5mm case size, improved wearability, and clean dial design, incorporating enthusiast feedback by removing the five stars and date. Reviewers and owners consistently highlight its exceptional finishing, well-acting ceramic bezel, and the value it offers. The manual-winding L792.4 column-wheel chronograph movement is COSC-certified and offers a power reserve of approximately 68 to 72 hours. Some owners expressed disappointment with the removal of the five stars from the dial, and one reviewer noted that some numerals are partially cut off by the subdials. The watch is priced around $5,350 to $5,550 USD. Overall, owners and reviewers rate the Longines Spirit Pilot Flyback highly for its improved dimensions, finishing, and value proposition.

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