Side by side

Borealis Watch Co. Porto CovovsGrand Seiko SLGW003

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
SLGW003
Grand SeikoSLGW003
MSRP $11,600

At a glance

13 of 29 specs differ
Diameter
Porto Covo40mm
SLGW00338.6mm
Power Reserve
Porto Covo40h
SLGW00380h
Water Resistance
Porto Covo300m
SLGW00330m
MSRP
Porto Covo$415
SLGW003$11,600

Full specifications

Case

7 specs
Category
Diver
Dress
Diameter
40mm
38.6mm
Thickness
11.6mm
9.95mm
Lug-to-Lug
42.5mm
45mm
Lug Width
20mm
20mm
Material
Stainless Steel
Titanium
Water Resistance
300m
30m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Lume
BGW9
None

Movement

3 specs
Caliber
Miyota 9039
9SA4
Type
Automatic
Manual
Power Reserve
40h
80h

Pricing

1 specs
MSRP
$415
$11,600

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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 SLGW003

The Grand Seiko SLGW003 is praised for its comfortable, lightweight Brilliant Hard Titanium case, meticulous finishing, and a clean, modern dial. Reviewers highlight the new 9SA4 manual-wind movement, noting its attractive finishing, 80-hour power reserve, and accuracy of -3/+5 seconds per day. It is considered a versatile dress watch blending vintage and future Grand Seiko spirit. The €11,700 price is noted as expensive, with some questioning its value. Overall, reviewers rate the Grand Seiko SLGW003 highly for its elegant design and impressive manual-wind movement at its flagship price point.

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