Certina DS Action Diver 40.5mm Powermatic 80vsDOXA SUB 250T GMT

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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 40.5mm Powermatic 80 at true scale

DS Action Diver 40.5mm Powermatic 80

DOXA SUB 250T GMT at true scale

SUB 250T GMT

Diameter

40.5mm

40mm

Lug-to-Lug

45.0mm

n/a

Thickness

13.2mm

n/a

Water Resistance

300m

highest

250m

Power Reserve

80h

highest

50h

MSRP

$1,032

lowest

$2,790

Movement

POWERMATIC 80.611

Automatic

Case

5 specs
Diameter
40.5mm
40mm
Thickness
13.22mm
n/a
Lug-to-Lug
45.01mm
n/a
Lug Width
19mm
n/a
Water Resistance
300m
250m

Crystal & Dial

2 specs
AR Coating
n/a
Yes
Dial Color
n/a
Aquamarine

Movement

2 specs
Caliber
POWERMATIC 80.611
n/a
Power Reserve
80h
50h

Pricing

1 specs
MSRP
$1,032
$2,790
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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.

DOXA SUB 250T GMT

The DOXA SUB 250T GMT is widely praised for its compact 40mm case, slim 10.85mm thickness, and sub-43mm lug-to-lug measurement, making it exceptionally comfortable and wearable. Reviewers highlight its functional GMT complication, precise bezel action, and the classic Doxa design language, noting its competitive pricing around €2,550 or $2,450. The skeletonized GMT hand is a point of discussion, with some finding it quirky or less intuitive, though others note it looks better in person and is easy to ignore for dive purposes. The watch is available in nine dial colors, with specific limited editions carrying a slight premium. Overall, reviewers rate the DOXA SUB 250T GMT highly for its wearable dimensions and value proposition as a capable dive watch with added GMT functionality.

From video reviewers

The watch's refined and wearable 42mm case size is a strength. Reviewers noted the iconic Doxa aesthetic combined with GMT functionality. No shared weaknesses were identified.