Borealis Watch Co. Bull Shark V2vsYema Skin Diver CMM.20

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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.

Borealis Watch Co. Bull Shark V2 at true scale

Bull Shark V2

Yema Skin Diver CMM.20 at true scale

Skin Diver CMM.20

Diameter

38mm

39.5mm

Lug-to-Lug

47mm

47mm

Thickness

12.6mm

11.5mm

lowest

Water Resistance

300m

highest

200m

MSRP

$495

lowest

$2,372

Movement

Miyota 9039

Yema CMM.20

Case

4 specs
Diameter
38mm
39.5mm
Thickness
12.6mm
11.5mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

3 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
n/a
Black
Lume
BGW9
None

Movement

1 specs
Caliber
Miyota 9039
Yema CMM.20

Pricing

1 specs
MSRP
$495
$2,372
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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Borealis Watch Co. Bull Shark V2

The red bezel is a standout feature. The watch wears small, which is a concern for larger wrists.

Yema Skin Diver CMM.20

The Yema Skin Diver CMM.20 is lauded for its vintage aesthetic, 39.5mm case size, and well-proportioned handset with sharp indices. Owners praise its textured cream dial, French tool watch elegance, and the smooth winding feel of the in-house CMM.20 micro-rotor movement. The fully brushed bracelet with toolless micro-adjust clasp is considered Yema's best yet. Accuracy readings range from -3/+7 seconds per day to approximately 0 to -10 seconds per day. Some reviewers noted questionable finishing on a prototype's hour hand and a rattly, stamped clasp. The watch's pricing has been questioned by some due to brand QC reputation, and its extended lug-to-lug may challenge smaller wrists. On balance, owners and reviewers appreciate the Yema Skin Diver CMM.20 for its vintage styling and improved bracelet design at its price point.

From video reviewers

The sapphire bezel insert and in-house CMM.20 movement are noted strengths. Reviewers questioned the value proposition compared to other Yema models.

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