CWC RN Automatic Divers Watch Mk.2vsSeiko Prospex Marinemaster 1965 Diver’s Modern Re-interpretation

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Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

CWC RN Automatic Divers Watch Mk.2 at true scale

RN Automatic Divers Watch Mk.2

Seiko Prospex Marinemaster 1965 Diver’s Modern Re-interpretation at true scale

Prospex Marinemaster 1965 Diver’s Modern Re-interpretation

Diameter

41mm

39.5mm

Lug-to-Lug

47mm

lowest

47.2mm

Thickness

n/a

12.3mm

Water Resistance

300m

highest

200m

Power Reserve

n/a

45h

MSRP

$1,249

lowest

$2,800

Movement

Sellita SW200-1

Seiko 6L37

Case

4 specs
Diameter
41mm
39.5mm
Thickness
n/a
12.3mm
Lug-to-Lug
47mm
47.2mm
Water Resistance
300m
200m

Crystal & Dial

4 specs
Crystal Shape
n/a
Box
AR Coating
n/a
Anti-reflective coating on inner surface
Dial Color
CWC RN Automatic Divers Watch Mk.2, Stainless Steel (RN300-MT AS120)
n/a
Lume
Super-LumiNova
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Sellita SW200-1
Seiko 6L37
Power Reserve
0h
45h
Jewels
0
26

Pricing

1 specs
MSRP
$1,249
$2,800
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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

CWC RN Automatic Divers Watch Mk.2

The CWC RN Automatic Divers Watch Mk.2 is praised for its build quality, utilitarian capabilities, and classic design, with owners appreciating its historical connection to the UK Navy and its suitability as a tool watch. Some find the fixed spring bars a drawback, limiting strap choices. One owner noted average finishing and a chipped polish. The CWC RN Automatic Divers Watch Mk.2 is a 41mm automatic diver with 300m water resistance. On balance, owners view the CWC RN Automatic Divers Watch Mk.2 positively for its heritage and robust tool-watch nature, despite some reservations about its price and finishing.

Seiko Prospex Marinemaster 1965 Diver’s Modern Re-interpretation

The Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation is noted for its slim 12.3mm case and 39.5mm diameter, making it a wearable dive watch. The automatic Seiko 6L37 movement is described as having a 45-46 hour power reserve, with one reviewer noting an accuracy of -10/+15 seconds per day. The watch features a box-shaped sapphire crystal and 200 meters of water resistance. However, its price of A$4,650 is considered high for its specifications, and one reviewer questions Seiko's continued reliance on the 62MAS design. On balance, reviewers find the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation to be a functional and refined dive watch, though its value proposition is debated due to its price point.

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