Side by side

Borealis Watch Co. Porto CovovsZelos Aurora Moonphase

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
Aurora Moonphase
ZelosAurora Moonphase
MSRP $949

At a glance

11 of 29 specs differ
Diameter
Porto Covo40mm
Aurora Moonphase39mm
Power Reserve
Porto Covo40h
Aurora Moonphase40h
Water Resistance
Porto Covo300m
Aurora Moonphase200m
MSRP
Porto Covo$415
Aurora Moonphase$949

Full specifications

Case

7 specs
Category
Diver
Moonphase
Diameter
40mm
39mm
Thickness
11.6mm
12.5mm
Lug-to-Lug
42.5mm
39mm
Lug Width
20mm
20mm
Material
Stainless Steel
Titanium
Water Resistance
300m
200m

Crystal & Dial

2 specs
Dial Color
Black
Meteorite
Lume
BGW9
None

Movement

1 specs
Caliber
Miyota 9039
Sellita SW288

Pricing

1 specs
MSRP
$415
$949

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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 Aurora Moonphase

Owners widely praise Zelos for offering excellent value, solid build quality, and enthusiast-friendly designs, with unique dial variants often selling out quickly. The Zelos Aurora Moonphase is noted as a desirable model, though finding one can be challenging. Some owners find Zelos's designs, including those of the Aurora line, to be too flashy for everyday wear, preferring a more subdued aesthetic. One owner reported their Zelos Aurora Nebula 38mm running at -5.3 seconds per day. Overall, owners rate the Zelos Aurora Moonphase highly for its desirable microbrand status and unique dial appeal.

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