Feynman Timekeepers CovevsYema 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.

Feynman Timekeepers Cove at true scale

Cove

Yema Skin Diver CMM.20 at true scale

Skin Diver CMM.20

Diameter

40mm

39.5mm

Lug-to-Lug

46mm

lowest

47mm

Thickness

12.8mm

11.5mm

lowest

Water Resistance

200m

200m

Power Reserve

50h

n/a

MSRP

$1,045

lowest

$2,372

Movement

ETA 2895-2

Yema CMM.20

Case

4 specs
Diameter
40mm
39.5mm
Thickness
12.8mm
11.5mm
Lug-to-Lug
46mm
47mm
Material
Stainless Steel
316L Stainless Steel

Crystal & Dial

2 specs
Crystal
Sapphire
Domed Sapphire
Lume
C3 X1-grade Swiss SuperLuminova
None

Movement

2 specs
Caliber
ETA 2895-2
Yema CMM.20
Power Reserve
50h
0h

Pricing

1 specs
MSRP
$1,045
$2,372
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Reviews

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

Feynman Timekeepers Cove

Feynman Timekeepers Cove owners praise its original and versatile design, with particular appreciation for the 4 o'clock logo and the "lizard tail" seconds hand. One owner highlights the lume as a key appeal. On balance, owners rate the Feynman Timekeepers Cove highly for its unique design elements.

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.