Certina DS Action Diver 38mmvsSeiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition

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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 Save the Ocean Special Edition at true scale

Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition

Diameter

38mm

40.5mm

Lug-to-Lug

45.0mm

lowest

47.6mm

Thickness

13.2mm

13.2mm

lowest

Water Resistance

300m

highest

200m

Power Reserve

80h

highest

70h

MSRP

$1,144

lowest

$1,250

Movement

POWERMATIC 80.611

Seiko 6R35

Case

6 specs
Diameter
38mm
40.5mm
Thickness
13.22mm
13.2mm
Lug-to-Lug
45.01mm
47.6mm
Lug Width
19mm
20mm
Material
Titanium
Stainless Steel
Water Resistance
300m
200m

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 6R35
Power Reserve
80h
70h
Jewels
0
24

Pricing

1 specs
MSRP
$1,144
$1,250
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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 Save the Ocean Special Edition

Owners widely praise the Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition for its unique dial color and execution, with one owner noting the 44mm lug-to-lug is perfect for most wrists. The watch is considered a refined piece with a fun factor, featuring a dial inspired by Okinawa's ocean colors expected to have a bright sunburst effect. Accuracy figures for the 6R35 movement range, with one owner reporting -10/+10 seconds per day as "pretty amazing," while others note issues with the 6R movement's accuracy. Some owners find the price of 1500€ too high, suggesting a value closer to 900€. On balance, owners and reviewers rate the Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition well for its dial execution and wearability, despite some debate over its price point.