Certina DS Action Diver 38mmvsSeiko Prospex Sea 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 Sea 1965 Heritage Diver's Watch at true scale

Prospex Sea 1965 Heritage Diver's Watch

Diameter

38mm

40mm

Lug-to-Lug

45.0mm

lowest

46.4mm

Thickness

13.2mm

13mm

lowest

Water Resistance

300m

300m

Power Reserve

80h

highest

72h

MSRP

$1,144

lowest

$1,300

Movement

POWERMATIC 80.611

Seiko 6R55

Case

5 specs
Diameter
38mm
40mm
Thickness
13.22mm
13mm
Lug-to-Lug
45.01mm
46.4mm
Lug Width
19mm
20mm
Material
Titanium
Stainless Steel

Crystal & Dial

3 specs
Crystal Shape
n/a
Curved
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 6R55
Power Reserve
80h
72h
Jewels
0
24

Pricing

1 specs
MSRP
$1,144
$1,300
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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 Sea 1965 Heritage Diver's Watch

Owners widely praise the Seiko Prospex Sea 1965 Heritage Diver's Watch for its refined engineering, comfortable 40mm case, and improved 300m water resistance. The watch is noted for its better build quality and finishing compared to some alternatives, featuring a mix of polished and brushed surfaces, with specific callouts for the jewel-toned teal dial with a rippling-water pattern. Some owners consider the price fair, while others suggest it is too high. Accuracy figures vary, with some owners reporting their 6R55 movement performs well within +/- 10 seconds per day, while others note theirs runs slow or have concerns about QC for the price. The bracelet, while improved, lacks modern features like quick-release or extensive micro-adjustments. Overall, owners and reviewers rate the Seiko Prospex Sea 1965 Heritage Diver's Watch highly for its refined design and build quality at its price point.

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