Side by side
CWC (Cabot Watch Company) RN81 Diver Automatic WatchvsSeiko 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
RN81 Diver Automatic Watch45mm
Prospex Sea41.3mm
Power Reserve
RN81 Diver Automatic Watch40h
Prospex Sea72h
Water Resistance
RN81 Diver Automatic Watch300m
Prospex Sea300m
MSRP
RN81 Diver Automatic Watch$2,858
Prospex Sea$1,100
Full specifications
Case
4 specsCategory
—
Diver
Diameter
45mm
41.3mm
Thickness
12.7mm
12.5mm
Lug-to-Lug
47mm
48.2mm
Crystal & Dial
3 specsAR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
—
Black
Lume
None
LumiBrite on hands, index(es) and bezel
Movement
3 specsCaliber
Sellita SW200-1
6R55
Power Reserve
40h
72h
Jewels
25
24
Pricing
1 specsMSRP
—
$1,100
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