Borealis Watch Co. Porto CovovsYema Diver
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.
Porto Covo
Diver
Diameter
40mm
39.5mm
Lug-to-Lug
42.5mm
n/a
Thickness
11.6mm
10.9mm
lowest
Water Resistance
300m
highest
200m
MSRP
$350
lowest
$990
Movement
Miyota 9039
Sellita SW200-1
Case
5 specsCrystal & Dial
2 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Borealis Porto Covo for its unique floating indices, which create a striking 3D effect. Some owners find the 39mm case size appealing, while others wish for a larger 42mm option. The watch is priced around $395-$400, though some community members feel it does not offer good value compared to other options. One owner reported poor accuracy and a negative customer service experience. Overall, owners rate the Borealis Porto Covo highly for its distinctive dial design, despite some reservations on value and accuracy.
The dial's unique "floating" indices are consistently praised as a standout feature, offering significant visual depth. The Miyota 9 series movement is a shared positive specification. No shared weaknesses were identified.
One owner reported a water ingress issue on their Yema Diver the first time it got wet in a lake, despite rinsing and inspecting the watch and bezel. Another owner notes this manual wind Yema Diver has a cool patina but is unlikely to be waterproof or gain value. Overall, owners view the Yema Diver as a fun second watch rather than an investment.
The Swiss Sellita movement is a notable feature. Reviewers did not reach a consensus on any weaknesses.
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