Side by side
Sheffield 1A 38vsYema Skin Diver Slim CMM.20
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
9 of 29 specs differDiameter
1A 3838mm
Skin Diver Slim CMM.2047mm
Power Reserve
1A 38—
Skin Diver Slim CMM.2040h
Water Resistance
1A 38200m
Skin Diver Slim CMM.20200m
MSRP
1A 38$238
Skin Diver Slim CMM.20$2,117
Full specifications
Case
4 specsDiameter
38mm
47mm
Thickness
12.8mm
10mm
Lug-to-Lug
46mm
47mm
Material
Stainless Steel
316L Stainless Steel
Crystal & Dial
2 specsCrystal
Sapphire
Domed Sapphire
Dial Color
Blue
Steel
Movement
2 specsCaliber
Seiko NH35
Yema CMM.20
Power Reserve
—
40h
Pricing
1 specsMSRP
$238
$2,117
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