Side by side

Grand Seiko SBGZ011vsYema Skin Diver CMM.20

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

SBGZ011
Grand SeikoSBGZ011
MSRP $84,000
Skin Diver CMM.20
YemaSkin Diver CMM.20
MSRP $2,372

At a glance

13 of 29 specs differ
Diameter
SBGZ01140mm
Skin Diver CMM.2039.5mm
Power Reserve
SBGZ01184h
Skin Diver CMM.2040h
Water Resistance
SBGZ01130m
Skin Diver CMM.20200m
MSRP
SBGZ011$84,000
Skin Diver CMM.20$2,372

Full specifications

Case

7 specs
Category
Dress
Diver
Diameter
40mm
39.5mm
Thickness
9.6mm
11.5mm
Lug-to-Lug
45.2mm
47mm
Lug Width
19mm
20mm
Material
Platinum
316L Stainless Steel
Water Resistance
30m
200m

Crystal & Dial

2 specs
Crystal
Sapphire
Domed Sapphire
AR Coating
Yes
Inner

Movement

3 specs
Caliber
9R02
Yema CMM.20
Type
Spring Drive
Automatic
Power Reserve
84h
40h

Pricing

1 specs
MSRP
$84,000
$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.

Grand Seiko SBGZ011

Grand Seiko SBGZ011 owners widely praise its in-person beauty and the finest Zaratsu polishing, noting that photos do not capture its artistry. Some owners find the framed logo and lettering detract from the dial's balance, and a few describe the watch as too flashy or "bling" for their taste, with one owner feeling its design deviates from Grand Seiko's ethos. The strap is also widely disliked. Overall, owners rate the Grand Seiko SBGZ011 highly for its stunning Zaratsu polishing and unique, beautiful in-person presence, despite some finding it overly flashy.

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.

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