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.

1980 RN Divers Automatic Re-Issue

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 specsCrystal & Dial
4 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
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.
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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