Side by side

Tissot Seastar 1000 GMTvsYema Skin Diver Slim CMM.20

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

Seastar 1000 GMT
TissotSeastar 1000 GMT
MSRP $575
Skin Diver Slim CMM.20
YemaSkin Diver Slim CMM.20
MSRP $2,117

At a glance

12 of 29 specs differ
Diameter
Seastar 1000 GMT40mm
Skin Diver Slim CMM.2047mm
Power Reserve
Seastar 1000 GMT40h
Skin Diver Slim CMM.2040h
Water Resistance
Seastar 1000 GMT300m
Skin Diver Slim CMM.20200m
MSRP
Seastar 1000 GMT$575
Skin Diver Slim CMM.20$2,117

Full specifications

Case

5 specs
Diameter
40mm
47mm
Thickness
11.77mm
10mm
Lug-to-Lug
40mm
47mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

4 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
Black
Steel
Indices
Indexes
Applied
Lume
Super-LumiNova ®
None

Movement

2 specs
Caliber
11 1/2'''
Yema CMM.20
Type
Quartz
Automatic

Pricing

1 specs
MSRP
$575
$2,117

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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.

Tissot Seastar 1000 GMT

Owners widely praise the Tissot Seastar 1000 GMT for its sapphire crystal, 300m water resistance, and GMT complication, with one owner expressing deep satisfaction. A point of contention for some is that Swiss quartz movements may exhibit second-hand misalignment with markers, unlike certain Japanese quartz movements. On balance, owners rate the Tissot Seastar 1000 GMT highly for its robust features and value.

Yema Skin Diver Slim CMM.20

Owners and reviewers widely praise the Yema Skin Diver Slim CMM.20 for its balanced 39mm case, vintage aesthetic, and unique champagne dial. The proprietary CMM.20 micro-rotor movement is a notable feature, though some owners report potential QC issues including erratic timegrapher readings and second-hand stutter. The lume is described as subdued, and while some find the "dragon scale" bracelet beautiful, others consider it generic. The price point is a hurdle for some, and the stamped clasp quality is considered subpar by one reviewer, with a gap noted by an owner. The lack of hacking seconds is flagged as a drawback at its price. Overall, owners and reviewers rate the Yema Skin Diver Slim CMM.20 highly for its vintage charm and balanced wearability.

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