Side by side

Phoibos Great WallvsYema Skin Diver CMM.20

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

Great Wall
PhoibosGreat Wall
MSRP $465
Skin Diver CMM.20
YemaSkin Diver CMM.20
MSRP $2,372

At a glance

12 of 29 specs differ
Diameter
Great Wall42mm
Skin Diver CMM.2039.5mm
Power Reserve
Great Wall40h
Skin Diver CMM.2040h
Water Resistance
Great Wall300m
Skin Diver CMM.20200m
MSRP
Great Wall$465
Skin Diver CMM.20$2,372

Full specifications

Case

6 specs
Diameter
42mm
39.5mm
Thickness
12mm
11.5mm
Lug-to-Lug
48mm
47mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

4 specs
Crystal
Sapphire
Domed Sapphire
AR Coating
Yes
Inner
Dial Color
Green
Black
Lume
Super-LumiNova
None

Movement

1 specs
Caliber
Miyota 9015
Yema CMM.20

Pricing

1 specs
MSRP
$465
$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.

Phoibos Great Wall

The Phoibos Great Wall is widely praised by owners for its solid build quality and impressive wrist presence. Reviewers highlight the metallic 3D brick pattern on the dial as a distinctive feature. Overall, owners rate the Phoibos Great Wall highly for its robust construction and unique dial design.

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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