Side by side
Borealis Watch Co. Sea Storm MK2 GMTvsYema Skin Diver Slim CMM.20
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
11 of 29 specs differDiameter
Sea Storm MK2 GMT41.50mm
Skin Diver Slim CMM.2047mm
Power Reserve
Sea Storm MK2 GMT40h
Skin Diver Slim CMM.2040h
Water Resistance
Sea Storm MK2 GMT300m
Skin Diver Slim CMM.20200m
MSRP
Sea Storm MK2 GMT$415
Skin Diver Slim CMM.20$2,117
Full specifications
Case
6 specsDiameter
41.50mm
47mm
Thickness
14.15mm
10mm
Lug-to-Lug
48.50mm
47mm
Lug Width
20mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
200m
Crystal & Dial
3 specsCrystal
Sapphire
Domed Sapphire
Dial Color
Black
Steel
Lume
BGW9
None
Movement
1 specsCaliber
NH34
Yema CMM.20
Pricing
1 specsMSRP
$415
$2,117
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