CWC 1980 RN Divers Automatic Re-IssuevsSeiko Prospex Marinemaster 1968 Heritage Diver's Watch

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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 1980 RN Divers Automatic Re-Issue at true scale

1980 RN Divers Automatic Re-Issue

Seiko Prospex Marinemaster 1968 Heritage Diver's Watch at true scale

Prospex Marinemaster 1968 Heritage Diver's Watch

Diameter

45mm

42.6mm

Lug-to-Lug

47mm

lowest

49.3mm

Thickness

12.7mm

lowest

14.1mm

Water Resistance

300m

300m

Power Reserve

n/a

72h

MSRP

$3,747

$3,600

lowest

Movement

ETA 2824-2

Seiko 8L45

Case

3 specs
Diameter
45mm
42.6mm
Thickness
12.7mm
14.1mm
Lug-to-Lug
47mm
49.3mm

Crystal & Dial

4 specs
Crystal Shape
n/a
Curved
AR Coating
n/a
Anti-reflective coating on inner surface
Dial Color
n/a
n/a
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
ETA 2824-2
Seiko 8L45
Power Reserve
0h
72h
Jewels
0
35

Pricing

1 specs
MSRP
$3,747
$3,600
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Reviews

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

CWC 1980 RN Divers Automatic Re-Issue

Owners widely praise the CWC (Cabot Watch Company) 1980 RN Divers Automatic Re-Issue Watch for its faithful homage to the original, with specific call-outs for the dial markings, vintage logo, and luminous acrylic bezel. Reviewers and owners alike appreciate the Monnin-style case, which is noted for wearing beautifully, and the matte black dial with legible hands. Accuracy is reported as excellent, with one owner noting under +2 seconds per day. The fixed lugs are seen by some as a drawback, though others consider them a positive feature for a tool watch. The "faux patina" lume receives mixed reactions, with some finding it too gold and glossy, while others favor it. The polished case finish is also noted as unusual for a military watch. Some owners question the value proposition at its price point, citing the ETA movement, though others see it as a strong alternative to more expensive options.

Seiko Prospex Marinemaster 1968 Heritage Diver's Watch

Owners and reviewers widely praise the Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch for its exceptional finishing, comparable to Grand Seiko, and refined design, with particular appreciation for its case shape and the 4:00 crown position. The watch is noted for its enjoyable look and feel, and some consider it a significant step up from standard Prospex models, offering premium finishing and a tool-like appearance. The movement Seiko 8L45 is mentioned, along with a 72-hour power reserve and an accuracy of -5/+10 seconds per day. However, some find the price point high, and one reviewer noted the unsigned winding crown as a missed opportunity for a watch in this price range. On balance, owners and reviewers rate the Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch highly for its exceptional finishing and refined design at its price point.

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