Side by side

Oak & Oscar The Humboldt ExP-02vsTissot Gentleman Open Heart

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
Gentleman Open Heart
TissotGentleman Open Heart
MSRP $1,025

At a glance

17 of 29 specs differ
Diameter
The Humboldt ExP-0239.5mm
Gentleman Open Heart40mm
Power Reserve
The Humboldt ExP-0256h
Gentleman Open Heart80h
Water Resistance
The Humboldt ExP-02200m
Gentleman Open Heart100m
MSRP
The Humboldt ExP-02$2,400
Gentleman Open Heart$1,025

Full specifications

Case

8 specs
Category
Tool
Chronograph
Diameter
39.5mm
40mm
Thickness
12.4mm
11.5mm
Lug-to-Lug
46.8mm
40mm
Lug Width
20mm
21mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
200m
100m
Caseback
Display
Solid

Crystal & Dial

5 specs
Crystal Shape
Double-domed
Domed
AR Coating
Inner
Yes
Dial Color
Grey
Silver
Indices
Applied
Indexes
Lume
Super-LumiNova BGW9
Super-LumiNova ®

Movement

3 specs
Caliber
Sellita SW300
11 1/2'''
Power Reserve
56h
80h
Complications
GMT, Chronograph
None

Pricing

1 specs
MSRP
$2,400
$1,025

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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.

Tissot Gentleman Open Heart

Owners widely praise the Tissot Gentleman Open Heart for its versatile dressy-sporty aesthetic and elegant sunburst dial finish, with one owner preferring its less shiny blue dial compared to other versions. The watch offers excellent fit and bracelet adjustability, and its modified Powermatic 80 movement achieves COSC-level accuracy of -3 to +5 seconds/day, though the seconds hand movement is slightly less smooth at 6 movements per second. However, one owner reported the watch arrived non-functional, requiring a return due to an inoperable movement. On balance, owners rate the Tissot Gentleman Open Heart highly for its aesthetic appeal and accurate timekeeping, despite a reported instance of a faulty movement.

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