Side by side

Borealis Watch Co. Porto CovovsHamilton Jazzmaster Seaview Auto

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
Jazzmaster Seaview Auto
HamiltonJazzmaster Seaview Auto
MSRP $945

At a glance

11 of 29 specs differ
Diameter
Porto Covo40mm
Jazzmaster Seaview Auto37mm
Power Reserve
Porto Covo40h
Jazzmaster Seaview Auto42h
Water Resistance
Porto Covo300m
Jazzmaster Seaview Auto100m
MSRP
Porto Covo$415
Jazzmaster Seaview Auto$945

Full specifications

Case

6 specs
Category
Diver
Dress
Diameter
40mm
37mm
Thickness
11.6mm
11.3mm
Lug-to-Lug
42.5mm
46mm
Lug Width
20mm
18mm
Water Resistance
300m
100m

Crystal & Dial

2 specs
Dial Color
Black
White
Lume
BGW9
None

Movement

2 specs
Caliber
Miyota 9039
2824-2
Power Reserve
40h
42h

Pricing

1 specs
MSRP
$415
$945

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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.

Hamilton Jazzmaster Seaview Auto

Owners widely praise the Hamilton Jazzmaster Seaview Auto for its attractive design and comfortable wearability when paired with aftermarket straps like sailcloth. Accuracy varies, with one owner reporting gains of 15 seconds per day after seven years of wear, which improved to +/- 4 seconds per day after servicing and case replacement. Another user noted finish issues after minimal wear, questioning the material quality. The Hamilton Jazzmaster Seaview Auto is available with a 45mm stainless steel case, sapphire crystal, 300m water resistance, and an ETA 2824-2 movement, with prices around $500. On balance, owners value the Hamilton Jazzmaster Seaview Auto for its aesthetic appeal and strap versatility, though material durability can be a concern for some.

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