Side by side

Borealis Watch Co. Porto CovovsZelos Thresher 44

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
Thresher 44
ZelosThresher 44
MSRP $549

At a glance

11 of 29 specs differ
Diameter
Porto Covo40mm
Thresher 4444mm
Power Reserve
Porto Covo40h
Thresher 4440h
Water Resistance
Porto Covo300m
Thresher 44500m
MSRP
Porto Covo$415
Thresher 44$549

Full specifications

Case

6 specs
Diameter
40mm
44mm
Thickness
11.6mm
12.8mm
Lug-to-Lug
42.5mm
44mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
500m

Crystal & Dial

3 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
Black
Grey
Lume
BGW9
None

Movement

1 specs
Caliber
Miyota 9039
Miyota 9015

Pricing

1 specs
MSRP
$415
$549

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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.

Zelos Thresher 44

Owners widely praise the Zelos Thresher 44, with one owner noting its finish has proven remarkably scratch-resistant. However, one owner found the finishing on their hammered grey variant not as well done as expected. The Zelos Thresher 44 with an agate dial sold out in 90 seconds, with one owner receiving theirs and noting the bracelet was fully wrapped. Overall, owners rate the Zelos Thresher 44 highly for its desirability and scratch-resistant finish.

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