Side by side

Borealis Watch Co. Porto CovovsTornek-Rayville Blakjak Time-elapse

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 Time-elapse
Tornek-RayvilleBlakjak Time-elapse
MSRP $895

At a glance

10 of 29 specs differ
Diameter
Porto Covo40mm
Blakjak Time-elapse42.5mm
Power Reserve
Porto Covo40h
Blakjak Time-elapse42h
Water Resistance
Porto Covo300m
Blakjak Time-elapse200m
MSRP
Porto Covo$415
Blakjak Time-elapse$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 Time-elapse

The Tornek-Rayville Blakjak Time-elapse is a rugged, dive-capable field watch, an evolution of a 1990s military concept. It features a 42.5mm stainless steel case, a sapphire crystal, and a Seiko NH36 automatic movement with a 40-hour power reserve. The dial is busy but functional, and the watch features Super-LumiNova BGW9. On balance, reviewers note the Tornek-Rayville Blakjak Time-elapse is a modernized military watch with robust dive capabilities.

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