Side by side

Borealis Watch Co. Porto CovovsYema Superman Titanium MoonTide CMM.11 Limited Edition

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 Titanium MoonTide CMM.11 Limited Edition
YemaSuperman Titanium MoonTide CMM.11 Limited Edition
MSRP $2,090

At a glance

10 of 29 specs differ
Diameter
Porto Covo40mm
Superman Titanium MoonTide CMM.11 Limited Edition38.5mm
Power Reserve
Porto Covo40h
Superman Titanium MoonTide CMM.11 Limited Edition40h
Water Resistance
Porto Covo300m
Superman Titanium MoonTide CMM.11 Limited Edition300m
MSRP
Porto Covo$415
Superman Titanium MoonTide CMM.11 Limited Edition$2,090

Full specifications

Case

5 specs
Diameter
40mm
38.5mm
Thickness
11.6mm
11.3mm
Lug-to-Lug
42.5mm
47mm
Lug Width
20mm
19mm
Material
Stainless Steel
Titanium

Crystal & Dial

3 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
Black
Titanium Scales Slim
Lume
BGW9
None

Movement

1 specs
Caliber
Miyota 9039
Yema CMM.11

Pricing

1 specs
MSRP
$415
$2,090

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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 Titanium MoonTide CMM.11 Limited Edition

Owners widely praise the Yema Superman's in-house CMM.10 movement, noting its accuracy often exceeds COSC specifications, and appreciate its elegant diver design with vintage DNA. Reviewers highlight the sunburst dials with gilt accents and bright Super-LumiNova, with case size options of 39mm and 41mm contributing to its wearability. Some owners desire versions without gold accents, and the semi-gloss finish adds flash that may not appeal to all. The CMM.10 movement is rated for +5/-3 seconds per day. On balance, owners and reviewers rate the Yema Superman highly for its in-house movement and elegant vintage-inspired design at its price point.

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