Side by side
CWC Quartz Divers Watch Mk.2 Day/Date Polished CasevsSeiko Prospex Sea
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
11 of 29 specs differDiameter
Quartz Divers Watch Mk.2 Day/Date Polished Case41mm
Prospex Sea41.3mm
Power Reserve
Quartz Divers Watch Mk.2 Day/Date Polished Case40h
Prospex Sea72h
Water Resistance
Quartz Divers Watch Mk.2 Day/Date Polished Case300m
Prospex Sea300m
MSRP
Quartz Divers Watch Mk.2 Day/Date Polished Case$608
Prospex Sea$1,100
Full specifications
Case
3 specsDiameter
41mm
41.3mm
Thickness
12mm
12.5mm
Lug-to-Lug
47mm
48.2mm
Crystal & Dial
3 specsAR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
CWC Quartz Divers Watch Mk.2 Day/Date Polished Case (RN300-P QS120-DD)
Black
Lume
Super-LumiNova
LumiBrite on hands, index(es) and bezel
Movement
4 specsCaliber
Ronda 517
6R55
Type
Quartz
Automatic
Power Reserve
40h
72h
Jewels
25
24
Pricing
1 specsMSRP
$608
$1,100
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