Side by side

Borealis Watch Co. Porto CovovsOak & Oscar The Humboldt ExP-02

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Porto Covo
Borealis Watch Co.Porto Covo
MSRP $415
The Humboldt ExP-02
Oak & OscarThe Humboldt ExP-02
MSRP $2,400

At a glance

15 of 29 specs differ
Diameter
Porto Covo40mm
The Humboldt ExP-0239.5mm
Power Reserve
Porto Covo40h
The Humboldt ExP-0256h
Water Resistance
Porto Covo300m
The Humboldt ExP-02200m
MSRP
Porto Covo$415
The Humboldt ExP-02$2,400

Full specifications

Case

8 specs
Category
Diver
Tool
Diameter
40mm
39.5mm
Thickness
11.6mm
12.4mm
Lug-to-Lug
42.5mm
46.8mm
Lug Width
20mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
200m
Caseback
Solid
Display

Crystal & Dial

3 specs
Crystal Shape
Flat
Double-domed
Dial Color
Black
Grey
Lume
BGW9
Super-LumiNova BGW9

Movement

3 specs
Caliber
Miyota 9039
Sellita SW300
Power Reserve
40h
56h
Complications
None
GMT, Chronograph

Pricing

1 specs
MSRP
$415
$2,400

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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.

Borealis Watch Co. Porto Covo

The Borealis Porto Covo is widely praised for its 39mm size and unique cantilevered indices that create a 3D effect and depth. Owners note the indices' floating appearance is a well-executed design. One owner reported poor accuracy and a terse customer service response, while another wished for a 42mm size option. The $395 price is considered reasonable for a microbrand, though some feel it does not compare favorably to AliExpress options. Overall, owners appreciate the Borealis Porto Covo for its distinctive dial design and wearable 39mm case size.

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.

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