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

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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 Powermatic 80 at true scale

DS Action Diver 38mm Powermatic 80

Fortis Marinemaster M-40 at true scale

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 specs
Diameter
38mm
40mm
Thickness
13.22mm
13mm
Lug-to-Lug
45.01mm
n/a
Lug Width
19mm
21mm

Crystal & Dial

1 specs
Dial Color
n/a
Orange

Movement

4 specs
Caliber
POWERMATIC 80.611
Sellita SW220-1
Beat Rate
0 vph
28,800 vph
Power Reserve
80h
38h
Jewels
0
26

Pricing

1 specs
MSRP
$1,045
$3,520
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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 Powermatic 80

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.

Fortis Marinemaster M-40

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.

From video reviewers

The watch's Swiss Made construction and robust design are consistently praised. Reviewers noted the bracelet as a potential point of contention.

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