Side by side

Borealis Watch Co. Porto CovovsSeiko 5 Sports SKX series

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
5 Sports SKX series
Seiko5 Sports SKX series
MSRP $495

At a glance

12 of 29 specs differ
Diameter
Porto Covo40mm
5 Sports SKX series42.5mm
Power Reserve
Porto Covo40h
5 Sports SKX series41h
Water Resistance
Porto Covo300m
5 Sports SKX series100m
MSRP
Porto Covo$415
5 Sports SKX series$495

Full specifications

Case

6 specs
Category
Diver
GMT
Diameter
40mm
42.5mm
Thickness
11.6mm
13.6mm
Lug-to-Lug
42.5mm
46mm
Lug Width
20mm
22mm
Water Resistance
300m
100m

Crystal & Dial

2 specs
Crystal
Sapphire
Hardlex
Lume
BGW9
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
Miyota 9039
4R34
Power Reserve
40h
41h
Jewels
25
24

Pricing

1 specs
MSRP
$415
$495

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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.

Seiko 5 Sports SKX series

The Seiko 5 Sports SKX series is widely praised as an excellent gateway watch, offering great value with a solid build and powerful lume. Owners widely report that the NH36 movement's accuracy is a "luck of the draw," with official specs allowing up to +/-40 seconds per day, though many experience +/-5 to 10 seconds. Some owners note the lack of a screw-down crown and 100m water resistance, while others highlight its ISO 6425 compliance, 200m water resistance, and screw-down crown as superior tool watch features. Some owners find the original SKX models heavier and bulkier than newer lines, while others praise its iconic, tough, and rugged dive watch design and proven durability. On balance, owners and reviewers rate the Seiko 5 Sports SKX series highly for its iconic, durable dive watch design and strong value proposition.

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