Certina DS Action Diver 43mm Powermatic 80vsTudor Black Bay 68

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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

Black Bay 68
Diameter
43mm
43mm
Lug-to-Lug
45.0mm
n/a
Thickness
13.2mm
lowest
13.6mm
Water Resistance
300m
highest
200m
Power Reserve
80h
n/a
MSRP
$1,045
n/a
Movement
POWERMATIC 80.611
Tudor MT5601
Case
5 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.
The Tudor Black Bay 68 is praised for its rugged build, refined steel bracelet without faux rivets, and METAS Master Chronometer-certified MT5601-U movement. Owners report a solid ownership experience, with the 43mm case offering good wrist presence and balanced proportions, wearing surprisingly well for its size. The T-Fit clasp is a welcome upgrade, and accuracy is noted at -2/+4 seconds per day with a 70-hour power reserve. However, the 43mm case size is a point of contention, considered too large for many wrists, though some owners with larger wrists find it fits perfectly and gets significant wrist time. The lack of strap options at launch and the 200m water resistance matching smaller models are noted drawbacks. One owner found the Tudor Black Bay 68 a bit heavy and ordered a leather strap to mitigate this. The Tudor Black Bay 68 has been removed from Tudor's website.
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