Side by side

Oak & Oscar The Humboldt ExP-02vsSeiko Prospex Sea 1968 Heritage Diver's GMT Watch

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

At a glance

16 of 29 specs differ
Diameter
The Humboldt ExP-0239.5mm
Prospex Sea 1968 Heritage Diver's GMT Watch42mm
Power Reserve
The Humboldt ExP-0256h
Prospex Sea 1968 Heritage Diver's GMT Watch72h
Water Resistance
The Humboldt ExP-02200m
Prospex Sea 1968 Heritage Diver's GMT Watch300m
MSRP
The Humboldt ExP-02$2,400
Prospex Sea 1968 Heritage Diver's GMT Watch$1,700

Full specifications

Case

7 specs
Category
Tool
Diver
Diameter
39.5mm
42mm
Thickness
12.4mm
13.3mm
Lug-to-Lug
46.8mm
48.6mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
200m
300m
Caseback
Display
Solid

Crystal & Dial

4 specs
Crystal Shape
Double-domed
Flat
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Grey
Black
Lume
Super-LumiNova BGW9
LumiBrite on hands, index(es) and bezel

Movement

4 specs
Caliber
Sellita SW300
6R54
Power Reserve
56h
72h
Jewels
25
24
Complications
GMT, Chronograph
None

Pricing

1 specs
MSRP
$2,400
$1,700

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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.

Seiko Prospex Sea 1968 Heritage Diver's GMT Watch

The Seiko Prospex Sea 1968 Heritage Diver's GMT Watch offers a 300-meter depth rating and a caller-style GMT complication powered by the Caliber 6R54 movement, which provides a 72-hour power reserve. Reviewers note its refined clasp with extensive micro-adjustment. However, the movement's accuracy, ranging from +25 to -15 seconds per day, is considered a drawback by some. Overall, reviewers highlight the Seiko Prospex Sea 1968 Heritage Diver's GMT Watch as a good reminder of Seiko's value, despite the wide accuracy range of its movement.

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