Certina DS Action Diver 43mm Powermatic 80vsSquale 1521

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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.

DS Action Diver 43mm Powermatic 80

1521
Diameter
43mm
42mm
Lug-to-Lug
45.0mm
n/a
Thickness
13.2mm
12.5mm
lowest
Water Resistance
300m
500m
highest
Power Reserve
80h
highest
38h
MSRP
$1,045
lowest
$1,265
Movement
POWERMATIC 80.611
Sellita SW200-1
Case
6 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Certina DS Action Diver 43mm Powermatic 80 is widely praised for its exceptional value, robust build quality, and sporty character, with owners highlighting its striking sunburst blue dial and precise bezel alignment. Some reviewers note the 43mm size and NATO strap can make it thick for under-cuff wear, and one owner found the end links did not perfectly match the case. Accuracy figures vary, with one report of 3-6 seconds per day and another of +45 seconds over 47 days. Overall, owners and reviewers consider the Certina DS Action Diver 43mm Powermatic 80 an excellently priced and well-built tool watch that offers significant value for its price.
Owners widely praise the Squale 1521 for its classic look and robust build, with specific mentions of its wearable 12.5mm thickness and refined case finishing. The 42mm case is noted by some to wear smaller, closer to 40mm, due to short lugs, feeling solid without being too large. However, opinions on the bracelet vary, with some finding it too flashy or stiff, and one owner reported moisture ingress after a shower due to a loose case back. The crown can be difficult to operate due to deep integration, and the 38-hour power reserve is considered old-school but reliable. Overall, owners rate the Squale 1521 highly for its classic design and wearability, despite some reservations about the bracelet and crown.
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