Certina DS Action Diver 38mm Powermatic 80vsFortis Marinemaster M-40

lug2lug doesn't sell watches. Buy links open the brand's or seller's own site. Some links are affiliate links: lug2lug may earn a commission at no extra cost to you. Disclosures
Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

DS Action Diver 38mm Powermatic 80

Marinemaster M-40
Diameter
38mm
40mm
Lug-to-Lug
45.0mm
n/a
Thickness
13.2mm
13mm
lowest
Water Resistance
300m
300m
Power Reserve
80h
highest
38h
MSRP
$1,045
lowest
$3,520
Movement
POWERMATIC 80.611
Sellita SW220-1
Case
4 specsCrystal & Dial
1 specsMovement
4 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Certina DS Action Diver 38mm Powermatic 80 is widely praised for its excellent value, robust build quality, and comfortable wearability, particularly on smaller wrists. Owners consistently highlight its smooth crown operation, excellent case finishing for the price, and the reliable Powermatic 80 movement, with accuracy reported between +1/+2 and -6 seconds per day. The watch is considered a well-balanced, classic-looking unisex dive watch with a dynamic sunburst dial and tank-like construction. However, some reviewers note that the 38mm version lacks a ceramic bezel, and one owner found the lume on the hour markers weak. Minor criticisms include end links that do not perfectly line up with the case and occasional bracelet hair-snagging, with one instance of disappointing bezel alignment for its price category. Overall, owners and reviewers rate the Certina DS Action Diver 38mm Powermatic 80 highly for its exceptional value and solid execution as a tool-watch.
Owners widely praise the Fortis Marinemaster M-40 for its gorgeous appearance and strong wrist presence, noting its impressive lume. The watch comes with a bracelet and three rubber straps, including a deployant buckle. On balance, owners rate the Fortis Marinemaster M-40 highly for its aesthetic appeal and comprehensive strap package.
The watch's Swiss Made construction and robust design are consistently praised. Reviewers noted the bracelet as a potential point of contention.
Similar watches
Matched to the watches above on size, movement, style and price, microbrands first. Open any one to dig in.
Also compared
Comparisons nearby in the catalog: alternatives to the watches above paired against the matchup.








