Certina DS Action Diver 40.5mm 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.

Certina DS Action Diver 40.5mm Powermatic 80 at true scale

DS Action Diver 40.5mm Powermatic 80

Fortis Marinemaster M-40 at true scale

Marinemaster M-40

Diameter

40.5mm

40mm

Lug-to-Lug

45.0mm

n/a

Thickness

13.2mm

13mm

lowest

Water Resistance

300m

300m

Power Reserve

80h

highest

38h

MSRP

$1,032

lowest

$3,520

Movement

POWERMATIC 80.611

Sellita SW220-1

Case

4 specs
Diameter
40.5mm
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
$1,032
$3,520
Keep your wishlist and collection together in the appExplore the app

Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Certina DS Action Diver 40.5mm Powermatic 80

Owners and reviewers widely praise the Certina DS Action Diver 40.5mm Powermatic 80 for its exceptional value, robust build quality, and ISO 6425 certification, with many highlighting its precise Powermatic 80.611 movement and excellent legibility. The watch is frequently lauded for its vibrant sunburst dials, clean design with gilt accents, and the smooth action of its engraved ceramic bezel. Some owners note the 40.5mm case's 14mm thickness as substantial, and a few find the end links do not perfectly align with the case, while others report accuracy between 3-6 seconds per day. Overall, owners and reviewers rate the Certina DS Action Diver 40.5mm Powermatic 80 highly for its impressive quality and value proposition in the dive watch market.

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.

Similar watches

Matched to the watches above on size, movement, style and price, microbrands first. Open any one to dig in.

DiscussionNot started

Also compared

Comparisons nearby in the catalog: alternatives to the watches above paired against the matchup.