Side by side

Borealis Watch Co. Porto CovovsCWC Mellor-72 Mechanical 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
Mellor-72 Mechanical Watch
CWCMellor-72 Mechanical Watch
MSRP $499

At a glance

12 of 29 specs differ
Diameter
Porto Covo40mm
Mellor-72 Mechanical Watch38mm
Power Reserve
Porto Covo40h
Mellor-72 Mechanical Watch40h
Water Resistance
Porto Covo300m
Mellor-72 Mechanical Watch50m
MSRP
Porto Covo$415
Mellor-72 Mechanical Watch$499

Full specifications

Case

6 specs
Category
Diver
Field
Diameter
40mm
38mm
Thickness
11.6mm
12mm
Lug-to-Lug
42.5mm
42mm
Lug Width
20mm
18.5mm
Water Resistance
300m
50m

Crystal & Dial

3 specs
Crystal
Sapphire
Acrylic
Dial Color
Black
CWC Mellor-72 Mechanical Watch
Lume
BGW9
Super-LumiNova

Movement

2 specs
Caliber
Miyota 9039
Sellita SW210
Type
Automatic
Manual

Pricing

1 specs
MSRP
$415
$499

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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 Mellor-72 Mechanical Watch

The CWC Mellor-72 Mechanical Watch is widely praised for its authentic, utilitarian design and satisfying hand-wound Sellita SW210 movement, with owners noting a smooth winding action and excellent accuracy, including one report of zero seconds deviation over 24 hours. Reviewers highlight the era-appropriate dial and functional "piece of kit" appeal, though some find the 35mm case small by modern standards and legibility can be impacted by the domed hesalite crystal. Owners report issues with fixed lug bars being poorly filled in and fogging inside the crystal, while others state no water resistance problems. Overall, owners and reviewers appreciate the CWC Mellor-72 Mechanical Watch for its genuine military heritage and functional charm, despite some practical drawbacks.

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