Side by side

Borealis Watch Co. Porto CovovsTornek-Rayville Blakjak 12-hr GMT

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
Blakjak 12-hr GMT
Tornek-RayvilleBlakjak 12-hr GMT
MSRP $895

At a glance

10 of 29 specs differ
Diameter
Porto Covo40mm
Blakjak 12-hr GMT42.5mm
Power Reserve
Porto Covo40h
Blakjak 12-hr GMT42h
Water Resistance
Porto Covo300m
Blakjak 12-hr GMT200m
MSRP
Porto Covo$415
Blakjak 12-hr GMT$895

Full specifications

Case

5 specs
Diameter
40mm
42.5mm
Thickness
11.6mm
13.2mm
Lug-to-Lug
42.5mm
49mm
Lug Width
20mm
22mm
Water Resistance
300m
200m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Lume
BGW9
Superluminova

Movement

2 specs
Caliber
Miyota 9039
SII NH36
Power Reserve
40h
42h

Pricing

1 specs
MSRP
$415
$895

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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.

Tornek-Rayville Blakjak 12-hr GMT

The Tornek-Rayville Blakjak 12-hr GMT is a 42.5mm stainless steel watch featuring a DLC-coated bezel, sapphire crystal, and a matte black dial with 12- and 24-hour scales. It is powered by a Seiko SII NH36 automatic movement, offering a 41-hour power reserve, and boasts 200 meters of water resistance. The dial includes a day/date complication and Super-LumiNova BGW9 lume. Overall, owners and reviewers highlight its robust build and functional military-inspired design as key strengths.

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