Side by side

Borealis Watch Co. Porto CovovsCitizen Tsuyosa Shore

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
Tsuyosa Shore
CitizenTsuyosa Shore
MSRP $495

At a glance

10 of 29 specs differ
Diameter
Porto Covo40mm
Tsuyosa Shore40mm
Power Reserve
Porto Covo40h
Tsuyosa Shore42h
Water Resistance
Porto Covo300m
Tsuyosa Shore100m
MSRP
Porto Covo$415
Tsuyosa Shore$495

Full specifications

Case

5 specs
Diameter
40mm
40mm
Thickness
11.6mm
12mm
Lug-to-Lug
42.5mm
46mm
Lug Width
20mm
9mm
Water Resistance
300m
100m

Crystal & Dial

2 specs
Dial Color
Black
Navy
Lume
BGW9
None

Movement

2 specs
Caliber
Miyota 9039
8210
Power Reserve
40h
42h

Pricing

1 specs
MSRP
$415
$495

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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.

Citizen Tsuyosa Shore

The Citizen Tsuyosa Shore is widely regarded as a versatile sports-casual watch with a sunray-brushed dial, luminous hands and markers, and a 100-meter water resistance. It features a unidirectional rotating bezel with a 60-minute aluminum insert and a President-style bracelet noted for its comfort and mix of finishes. The watch is powered by the in-house automatic Calibre 8210 movement. While it offers 100m WR and a rotating bezel, it is not considered a true diver's watch as it does not meet ISO certification or tool-watch standards. On balance, owners and reviewers appreciate the Citizen Tsuyosa Shore for its accessible pricing and everyday wearability as a lifestyle-oriented timepiece.

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