Side by side

Sugess Tourbillon Master SU8230vsYema Skin Diver CMM.20

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

Tourbillon Master SU8230
SugessTourbillon Master SU8230
MSRP $1,399
Skin Diver CMM.20
YemaSkin Diver CMM.20
MSRP $2,372

At a glance

13 of 29 specs differ
Diameter
Tourbillon Master SU823041mm
Skin Diver CMM.2039.5mm
Power Reserve
Tourbillon Master SU823040h
Skin Diver CMM.2040h
Water Resistance
Tourbillon Master SU823050m
Skin Diver CMM.20200m
MSRP
Tourbillon Master SU8230$1,399
Skin Diver CMM.20$2,372

Full specifications

Case

8 specs
Category
Chronograph
Diver
Diameter
41mm
39.5mm
Thickness
11mm
11.5mm
Lug-to-Lug
46mm
47mm
Lug Width
11mm
20mm
Material
Yellow Gold/Rose Gold/Bronze
316L Stainless Steel
Water Resistance
50m
200m
Caseback
Display
Solid

Crystal & Dial

1 specs
Crystal
Sapphire
Domed Sapphire

Movement

3 specs
Caliber
Seagull ST8230
Yema CMM.20
Beat Rate
3 vph
28,800 vph
Complications
GMT, Moonphase, Date
None

Pricing

1 specs
MSRP
$1,399
$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.

Sugess Tourbillon Master SU8230

Owners widely praise the Sugess Tourbillon Master for its stunning enamel dial and impressive finishing at its price point. Accuracy figures vary, with one owner reporting -12s/day and another +6 to +11s/day. Caveats include a cumbersome winding crown, limited 50m water resistance, a 21mm lug width, and a non-hacking movement, with one owner noting a power reserve around two days and noticeable resistance when winding. On balance, owners rate the Sugess Tourbillon Master highly for its visually striking dial and finishing, which significantly elevates its perceived value.

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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