Certina DS Action Diver 38mmvsSeiko Prospex Marinemaster 1965 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.

Certina DS Action Diver 38mm at true scale

DS Action Diver 38mm

Seiko Prospex Marinemaster 1965 Heritage Diver's Watch at true scale

Prospex Marinemaster 1965 Heritage Diver's Watch

Diameter

38mm

39.5mm

Lug-to-Lug

45.0mm

lowest

47.2mm

Thickness

13.2mm

12.3mm

lowest

Water Resistance

300m

highest

200m

Power Reserve

80h

highest

45h

MSRP

$1,144

lowest

$2,800

Movement

POWERMATIC 80.611

Seiko 6L37

Case

6 specs
Diameter
38mm
39.5mm
Thickness
13.22mm
12.3mm
Lug-to-Lug
45.01mm
47.2mm
Lug Width
19mm
20mm
Material
Titanium
Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

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

Movement

3 specs
Caliber
POWERMATIC 80.611
Seiko 6L37
Power Reserve
80h
45h
Jewels
0
26

Pricing

1 specs
MSRP
$1,144
$2,800
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Reviews

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

Certina DS Action Diver 38mm

Owners widely praise the Certina DS Action Diver 38mm for its excellent value, quality finishing, and comfortable dimensions, with many recommending it as a daily wear. Reviewers and owners consistently highlight its robust build quality, smooth crown operation, and the attractive, cleaner dial compared to other models. Specific praise is given to its 38mm case size, 45mm lug-to-lug, and 12.2mm thickness, making it ideal for smaller wrists. Some owners were drawn to unique features like the grey-titanium case and distinctive color accents. The Powermatic 80 movement is noted for its 80-hour power reserve. Caveats include male end links, which some owners consider a flaw, and one reviewer missed the charm of the previous model's aluminum bezel, finding the updated ceramic bezel colder. One owner advised trying on the watch as it wears very small. Overall, owners and reviewers rate the Certina DS Action Diver 38mm highly for its exceptional value and well-executed compact diver design.

Seiko Prospex Marinemaster 1965 Heritage Diver's Watch

The Seiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch is praised for its modern execution of a classic design, with reviewers noting the appealing 39.5mm case size and updated bracelet that improve wearability. Some reviewers mention the 6L37 movement has a 46-hour power reserve, with accuracy rated around -10/+15 seconds per day. A drawback identified by reviewers is the lack of tool-free micro-adjustment on the clasp. Overall, owners and reviewers find the Seiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch to be a handsome re-interpretation of a beloved design, with its improved wearability being a key strength.