Side by side

Borealis Watch Co. Porto CovovsLum-Tec Solar Marine

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
Solar Marine
Lum-TecSolar Marine
MSRP $463

At a glance

9 of 29 specs differ
Diameter
Porto Covo40mm
Solar Marine39mm
Power Reserve
Porto Covo40h
Solar Marine40h
Water Resistance
Porto Covo300m
Solar Marine300m
MSRP
Porto Covo$415
Solar Marine$463

Full specifications

Case

5 specs
Diameter
40mm
39mm
Thickness
11.6mm
10.7mm
Lug-to-Lug
42.5mm
43.5mm
Lug Width
20mm
20mm
Material
Stainless Steel
316L Stainless Steel (DLC coated)

Crystal & Dial

2 specs
Dial Color
Black
Steel
Lume
BGW9
None

Movement

1 specs
Caliber
Miyota 9039

Pricing

1 specs
MSRP
$415
$463

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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.

Lum-Tec Solar Marine

Lum-Tec Solar Marine owners praise its all-black diver design, excellent lume, and rugged, tank-like build. One owner finds it a perfect fit for a 7-inch wrist and the most frequently worn watch despite its smaller size. However, one owner cautions that the PVD coating will wear and chip within a year, impacting its appearance, and another finds the price high for a solar quartz watch with added lume. On balance, owners rate the Lum-Tec Solar Marine highly for its robust design and excellent lume, despite concerns about PVD durability and value proposition.

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