Side by side

Borealis Watch Co. Porto CovovsZelos Nasa Edition (sellita)

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
Nasa Edition (sellita)
ZelosNasa Edition (sellita)
MSRP $629

At a glance

13 of 29 specs differ
Diameter
Porto Covo40mm
Nasa Edition (sellita)39mm
Power Reserve
Porto Covo40h
Nasa Edition (sellita)40h
Water Resistance
Porto Covo300m
Nasa Edition (sellita)50m
MSRP
Porto Covo$415
Nasa Edition (sellita)$629

Full specifications

Case

7 specs
Category
Diver
Dress
Diameter
40mm
39mm
Thickness
11.6mm
7.6mm
Lug-to-Lug
42.5mm
39mm
Lug Width
20mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
50m

Crystal & Dial

3 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
Black
NASA Edition (Sellita)
Lume
BGW9
None

Movement

2 specs
Caliber
Miyota 9039
ETA/Peseux 7001
Type
Automatic
Manual

Pricing

1 specs
MSRP
$415
$629

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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.

Zelos Nasa Edition (sellita)

The Zelos Nasa Edition (sellita) is praised for its thinness, stemming from its hand-wound Sellita SW215 movement, and is noted for its good size and wearability. The watch features a 39mm case, a 45mm lug to lug, and a 20mm lug width. On balance, owners rate the Zelos Nasa Edition (sellita) highly for its comfortable dimensions and thin profile.

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