Side by side

Borealis Watch Co. Porto CovovsMarathon GPQ-D (Officer's Quartz with Date) Field 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
GPQ-D (Officer's Quartz with Date) Field Watch
MarathonGPQ-D (Officer's Quartz with Date) Field Watch
MSRP $650

At a glance

11 of 29 specs differ
Diameter
Porto Covo40mm
GPQ-D (Officer's Quartz with Date) Field Watch36mm
Power Reserve
Porto Covo40h
GPQ-D (Officer's Quartz with Date) Field Watch40h
Water Resistance
Porto Covo300m
GPQ-D (Officer's Quartz with Date) Field Watch30m
MSRP
Porto Covo$415
GPQ-D (Officer's Quartz with Date) Field Watch$650

Full specifications

Case

7 specs
Category
Diver
Field
Diameter
40mm
36mm
Thickness
11.6mm
11mm
Lug-to-Lug
42.5mm
44mm
Lug Width
20mm
16mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
30m

Crystal & Dial

1 specs
Lume
BGW9
None

Movement

2 specs
Caliber
Miyota 9039
Swiss High-Torque Quartz (3J, EOL)
Type
Automatic
Quartz

Pricing

1 specs
MSRP
$415
$650

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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.

Marathon GPQ-D (Officer's Quartz with Date) Field Watch

Marathon GPQ-D (Officer's Quartz with Date) Field Watch owners praise its tritium tubes, Mil-spec designation, and scratch-resistant case finish, with some finding the 36mm size practical for field use. However, some owners criticize its perceived overpriced nature, thick case, and squared-off lugs, while others point to the composite case material, 30m water resistance, and unbranded movement as drawbacks. On balance, owners are divided on the Marathon GPQ-D (Officer's Quartz with Date) Field Watch, with opinions split on its value and design features.

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