Side by side

Borealis Watch Co. Porto CovovsGrand Seiko SBGV245

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
SBGV245
Grand SeikoSBGV245
MSRP $3,000

At a glance

10 of 29 specs differ
Diameter
Porto Covo40mm
SBGV24540mm
Power Reserve
Porto Covo40h
SBGV24540h
Water Resistance
Porto Covo300m
SBGV245200m
MSRP
Porto Covo$415
SBGV245$3,000

Full specifications

Case

5 specs
Diameter
40mm
40mm
Thickness
11.6mm
11.8mm
Lug-to-Lug
42.5mm
47.1mm
Lug Width
20mm
20mm
Water Resistance
300m
200m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Lume
BGW9
None

Movement

2 specs
Caliber
Miyota 9039
9F82
Type
Automatic
Quartz

Pricing

1 specs
MSRP
$415
$3,000

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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.

Grand Seiko SBGV245

Grand Seiko SBGV245 owners widely praise its exceptional case finishing with mixed polishing and brushing, faceted indices, sharp hands, and matte dial, noting its robust tool-watch specifications including 200m water resistance, anti-magnetism, and Lumibrite. The 9F82 quartz movement is lauded for its precision, accurate to +/- 10 seconds per year, offering a refined, set-it-and-forget-it experience with carefree maintenance. Some owners report the Zaratsu polished surfaces and sharp bezel are prone to dings and scratches, and one notes the second hand does not perfectly align with the markers. This JDM-exclusive Grand Seiko SBGV245 is rarely available and commands a high price even on the resale market. Overall, owners rate the Grand Seiko SBGV245 highly for its exceptional finishing and technical innovation at a competitive price point.

From video reviewers

The 9F Quartz movement is a high-precision quartz movement with a 50-year lifespan. The watch's exceptional finishing is another level, with reviewers praising its high-quality craftsmanship. The watch's lug width of 20mm might be a drawback for those with smaller wrists or limited strap options, and the lume brightness is somewhat lacking.

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