Side by side

Borealis Watch Co. Porto CovovsZelos Comet 39

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
Comet 39
ZelosComet 39
MSRP $2,499

At a glance

13 of 29 specs differ
Diameter
Porto Covo40mm
Comet 3939mm
Power Reserve
Porto Covo40h
Comet 3940h
Water Resistance
Porto Covo300m
Comet 3950m
MSRP
Porto Covo$415
Comet 39$2,499

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
Tantalum LE
Lume
BGW9
None

Movement

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

Pricing

1 specs
MSRP
$415
$2,499

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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 Comet 39

Owners widely praise the Zelos Comet 39 for its wearable 39mm size, thin profile under 10mm thanks to its manual-wind Sellita SW215 movement, and its captivating dial with a deep starburst effect. The winding action is described as a joy, and the watch is considered a stunner for its price, blending modern and vintage aesthetics. Some owners note frustration with Zelos's limited production runs leading to quick sell-outs. One owner found the logo childlike, while another experienced strap-rubbing issues with the short lugs, which were resolved with a Milanese bracelet. Overall, owners and reviewers rate the Zelos Comet 39 highly for its excellent value and striking dial design.

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