Side by side

Christopher Ward C63 Sealander RocksvsYema Skin Diver CMM.20

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

C63 Sealander Rocks
Christopher WardC63 Sealander Rocks
MSRP $1,405
Skin Diver CMM.20
YemaSkin Diver CMM.20
MSRP $2,372

At a glance

17 of 29 specs differ
Diameter
C63 Sealander Rocks42.87mm
Skin Diver CMM.2039.5mm
Power Reserve
C63 Sealander Rocks38h
Skin Diver CMM.2040h
Water Resistance
C63 Sealander Rocks150m
Skin Diver CMM.20200m
MSRP
C63 Sealander Rocks$1,405
Skin Diver CMM.20$2,372

Full specifications

Case

8 specs
Category
Diver
Diameter
42.87mm
39.5mm
Thickness
11.05mm
11.5mm
Lug-to-Lug
42.87mm
47mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed + Polished + Sandblasted
Brushed and polished
Water Resistance
150m
200m
Caseback
Display
Solid

Crystal & Dial

3 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
Yellow
Black
Lume
SLN X1 BL C1
None

Movement

5 specs
Caliber
SW200
Yema CMM.20
Beat Rate
4 vph
28,800 vph
Power Reserve
38h
40h
Jewels
26
25
Complications
Moonphase, Day-date
None

Pricing

1 specs
MSRP
$1,405
$2,372

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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.

Christopher Ward C63 Sealander Rocks

The Christopher Ward C63 Sealander Rocks is praised for its exceptional wearability and versatile design, with its 36mm case noted as fitting well on smaller wrists. Owners highlight the unique gloss dial and refined indices as particularly special, contributing to a quality that exceeds its price point. One owner reported the crown movement was less smooth than higher-end options, and the Sellita SW200 movement's rotor can be a bit loud. The Consort bracelet is noted as lighter and more conforming than the Bader, though some prefer the Bader for robustness. On balance, owners and reviewers rate the Christopher Ward C63 Sealander Rocks highly for its comfortable wearability and refined dial aesthetics at its price.

Yema Skin Diver CMM.20

Owners and reviewers widely praise the Yema Skin Diver CMM.20 for its vintage aesthetic, 39mm-39.5mm case size, and the in-house CMM.20 micro-rotor movement. The watch features a textured cream dial, sharp applied indices, and a satisfyingly over-engineered push-to-turn bi-directional bezel. The fully brushed bracelet with toolless micro-adjust clasp is highlighted as a significant improvement, though some note its extended lug-to-lug may challenge smaller wrists. Accuracy figures range from -3/+7 seconds per day to erratic results between 0 and -10 seconds per day, with a 70-hour power reserve. Some owners express concerns about the brand's QC reputation and the micro-rotor movement's performance, while one reviewer noted questionable finishing on a prototype's hour hand and a rattly clasp. Overall, owners and reviewers rate the Yema Skin Diver CMM.20 highly for its vintage styling and improved bracelet at the price.

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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