CWC E9 Automatic DivervsSeiko 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.

E9 Automatic Diver

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
$2,120
lowest
$2,800
Movement
Sellita SW200-1
Seiko 6L37
Case
4 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) E9 Automatic Diver Watch for its classic dial design, excellent lume, and exceptionally durable PVD-coated case that withstands rough use. Reviewers note the 41mm case wears close to perfectly, with a modest 12mm thickness. One owner suggests replacing the mineral crystal with sapphire to prevent scratches. On balance, owners and reviewers rate the CWC (Cabot Watch Company) E9 Automatic Diver Watch highly for its legible dial and comfortable wearability.
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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