Side by side

Oak & Oscar The Humboldt ExP-02vsSeiko 5 Sports Field series

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
5 Sports Field series
Seiko5 Sports Field series
MSRP $315

At a glance

16 of 29 specs differ
Diameter
The Humboldt ExP-0239.5mm
5 Sports Field series39.4mm
Power Reserve
The Humboldt ExP-0256h
5 Sports Field series41h
Water Resistance
The Humboldt ExP-02200m
5 Sports Field series100m
MSRP
The Humboldt ExP-02$2,400
5 Sports Field series$315

Full specifications

Case

7 specs
Category
Tool
Sport
Diameter
39.5mm
39.4mm
Thickness
12.4mm
13.2mm
Lug-to-Lug
46.8mm
48.1mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
200m
100m
Caseback
Display
Solid

Crystal & Dial

4 specs
Crystal
Sapphire
Hardlex
Crystal Shape
Double-domed
Curved
Dial Color
Grey
Black
Lume
Super-LumiNova BGW9
LumiBrite on hands and index(es)

Movement

4 specs
Caliber
Sellita SW300
4R36
Power Reserve
56h
41h
Jewels
25
24
Complications
GMT, Chronograph
None

Pricing

1 specs
MSRP
$2,400
$315

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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 5 Sports Field series

The Seiko 5 Sports Field series is praised for its value, offering an accessible explorer-style watch with a GMT complication and excellent legibility thanks to LumiBrite on the dial and bezel. The watches feature a 41mm stainless steel case, 100m water resistance, and are powered by either the 4R36 or 4R34 movement, both with a 41-hour power reserve. One reviewer notes the inclusion of a compass bezel with a lumed pearl and fully lumed Arabic numerals on the dial for the non-GMT models. Overall, reviewers consider the Seiko 5 Sports Field GMT models good value under 500 euros.

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