Side by side
CWC (Cabot Watch Company) RN300 Automatic Diver Mk.1 Tritium Watch With DatevsSeiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
RN300 Automatic Diver Mk.1 Tritium Watch With Date40mm
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch42.6mm
Power Reserve
RN300 Automatic Diver Mk.1 Tritium Watch With Date40h
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch72h
Water Resistance
RN300 Automatic Diver Mk.1 Tritium Watch With Date300m
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch300m
MSRP
RN300 Automatic Diver Mk.1 Tritium Watch With Date$3,174
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch$3,600
Full specifications
Case
4 specsCategory
—
Diver
Diameter
40mm
42.6mm
Thickness
14.5mm
14.1mm
Lug-to-Lug
46mm
49.3mm
Crystal & Dial
5 specsCrystal
Mineral
Sapphire
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
—
Black
Lume
None
LumiBrite on hands, index(es) and bezel
Movement
3 specsCaliber
ETA 2824
8L45
Power Reserve
40h
72h
Jewels
25
35
Pricing
1 specsMSRP
—
$3,600
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