Side by side

Borealis Watch Co. Porto CovovsSartory Billard SB04

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
SB04
Sartory BillardSB04
MSRP $2,900

At a glance

10 of 29 specs differ
Diameter
Porto Covo40mm
SB0440mm
Power Reserve
Porto Covo40h
SB0440h
Water Resistance
Porto Covo300m
SB0430m
MSRP
Porto Covo$415
SB04$2,900

Full specifications

Case

6 specs
Category
Diver
Dress
Diameter
40mm
40mm
Thickness
11.6mm
11.5mm
Lug-to-Lug
42.5mm
45.5mm
Lug Width
20mm
20mm
Water Resistance
300m
30m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Lume
BGW9
None

Movement

1 specs
Caliber
Miyota 9039
LJP G100

Pricing

1 specs
MSRP
$415
$2,900

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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 SB04

The dial's textured finish and color shift are highlighted as a key strength. The bracelet's perceived lack of refinement and end-link fit are noted as a drawback. Reviewers disagree on the case size, with mentions of 35.9mm and 40mm.

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