Side by side

Borealis Watch Co. Porto CovovsCWC G40 Sonar Quartz Watch

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
G40 Sonar Quartz Watch
CWCG40 Sonar Quartz Watch
MSRP $333

At a glance

11 of 29 specs differ
Diameter
Porto Covo40mm
G40 Sonar Quartz Watch40mm
Power Reserve
Porto Covo40h
G40 Sonar Quartz Watch40h
Water Resistance
Porto Covo300m
G40 Sonar Quartz Watch200m
MSRP
Porto Covo$415
G40 Sonar Quartz Watch$333

Full specifications

Case

6 specs
Category
Diver
Field
Diameter
40mm
40mm
Thickness
11.6mm
12mm
Lug-to-Lug
42.5mm
46mm
Lug Width
20mm
20mm
Water Resistance
300m
200m

Crystal & Dial

3 specs
AR Coating
Inner
Yes
Dial Color
Black
CWC G40 Sonar Quartz Watch
Lume
BGW9
Super-LumiNova

Movement

1 specs
Caliber
Miyota 9039

Pricing

1 specs
MSRP
$415
$333

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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.

CWC G40 Sonar Quartz Watch

Owners widely appreciate the CWC G40 Sonar Quartz Watch for its classic G10 design, 40mm case size, and 20atm water resistance, noting its light, rugged, and reliable "grab-n-go" nature. Some find the dial proportions have too much negative space, while others praise its unique anodized red crown and quality NATO straps. A larger crown can dig into the wrist, and the lack of a battery hatch is a trade-off for its 100m water resistance. On balance, owners value the CWC G40 Sonar Quartz Watch for its robust build and classic aesthetic, though its price point and competition are frequently cited concerns.

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