Side by side

Maen Greenwich 38 GMTvsYema Skin Diver CMM.20

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

Greenwich 38 GMT
MaenGreenwich 38 GMT
MSRP $799
Skin Diver CMM.20
YemaSkin Diver CMM.20
MSRP $2,372
What people say

Owners + reviewers, side by side

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

Maen Greenwich 38 GMT

Owners and reviewers widely praise the Maen Greenwich 38 GMT for its elegant 38mm sizing, exceptional case finishing, and flawless enamel dial. The SwissTech S24-045 movement is noted for its smooth winding and accurate timekeeping, with figures ranging from zero deviation to +7 seconds per day, though its 40-hour power reserve is considered unremarkable. Some owners find the hour markers too bold, the GMT hour markings difficult to read, and the GMT hand alignment slightly off, while one user experienced crown resistance and movement stoppage. The lug-to-lug measurement is reported to make the 38mm case wear slightly larger. Overall, owners and reviewers rate the Maen Greenwich 38 GMT highly for its premium finishing and design at its price point.

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.

At a glance

9 of 29 specs differ
Diameter
Greenwich 38 GMT38mm
Skin Diver CMM.2039.5mm
Power Reserve
Greenwich 38 GMT40h
Skin Diver CMM.2040h
Water Resistance
Greenwich 38 GMT100m
Skin Diver CMM.20200m
MSRP
Greenwich 38 GMT$799
Skin Diver CMM.20$2,372

Full specifications

Case

6 specs
Category
GMT
Diver
Diameter
38mm
39.5mm
Thickness
12mm
11.5mm
Lug-to-Lug
47mm
Lug Width
20mm
Water Resistance
100m
200m

Crystal & Dial

1 specs
Dial Color
MGG.01
Black

Movement

1 specs
Caliber
Yema CMM.20

Pricing

1 specs
MSRP
$799
$2,372
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