Side by side

Borealis Watch Co. Porto CovovsSartory Billard SB05

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

At a glance

12 of 29 specs differ
Diameter
Porto Covo40mm
SB0538.5mm
Power Reserve
Porto Covo40h
SB0590h
Water Resistance
Porto Covo300m
SB0550m
MSRP
Porto Covo$415
SB05

Full specifications

Case

6 specs
Category
Diver
Dress
Diameter
40mm
38.5mm
Thickness
11.6mm
8.5mm
Lug-to-Lug
42.5mm
45.5mm
Lug Width
20mm
20mm
Water Resistance
300m
50m

Crystal & Dial

2 specs
Dial Color
Black
Sapphire
Lume
BGW9
None

Movement

3 specs
Caliber
Miyota 9039
LJP Cal. 7380
Type
Automatic
Manual
Power Reserve
40h
90h

Pricing

1 specs
MSRP
$415

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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.

Sartory Billard SB05

The dial's Maki-e Raden and aventurine combination is a standout feature. The 38.5mm case size and slim profile are noted for comfort.

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