Side by side

Borealis Watch Co. Porto CovovsYema Superman Bronze CMM.10

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
Superman Bronze CMM.10
YemaSuperman Bronze CMM.10
MSRP $1,699

At a glance

10 of 29 specs differ
Diameter
Porto Covo40mm
Superman Bronze CMM.1039mm
Power Reserve
Porto Covo40h
Superman Bronze CMM.1040h
Water Resistance
Porto Covo300m
Superman Bronze CMM.10300m
MSRP
Porto Covo$415
Superman Bronze CMM.10$1,699

Full specifications

Case

5 specs
Diameter
40mm
39mm
Thickness
11.6mm
11mm
Lug-to-Lug
42.5mm
Lug Width
20mm
19mm
Material
Stainless Steel
Bronze

Crystal & Dial

3 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
Black
Bronze
Lume
BGW9
None

Movement

1 specs
Caliber
Miyota 9039
Yema CMM.10

Pricing

1 specs
MSRP
$415
$1,699

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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.

Yema Superman Bronze CMM.10

The Yema Superman Bronze CMM.10 is praised for its neo-vintage dive watch aesthetic, featuring a bronze case with brushed and polished finishing and a gradient blue sandwich dial with Super-LumiNova. It is powered by the in-house CMM.10 automatic movement, which offers a 70-hour power reserve and chronometric precision rated at -3/+5 seconds per day. The watch is available in 39mm and 41mm case sizes and comes on FKM Viton rubber straps. It was offered at a pre-order price of €999. Overall, reviewers highlight the Yema Superman Bronze CMM.10 as a refined neo-vintage dive watch with a capable in-house movement and attractive finishing.

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