Certina DS Action Diver 40.5mm Powermatic 80vsOrient Kamasu

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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

Orient Kamasu at true scale

Kamasu

Diameter

40.5mm

41.8mm

Lug-to-Lug

45.0mm

lowest

47mm

Thickness

13.2mm

12.8mm

lowest

Water Resistance

300m

highest

200m

Power Reserve

80h

highest

40h

MSRP

$1,032

$375

lowest

Movement

POWERMATIC 80.611

Orient F6922

Case

5 specs
Diameter
40.5mm
41.8mm
Thickness
13.22mm
12.8mm
Lug-to-Lug
45.01mm
47mm
Lug Width
19mm
22mm
Water Resistance
300m
200m

Crystal & Dial

1 specs
Dial Color
n/a
Black

Movement

7 specs
Caliber
POWERMATIC 80.611
Orient F6922
Beat Rate
0 vph
21,600 vph
Power Reserve
80h
40h
Jewels
0
22
Hacking
No
Yes
Hand-winding
No
Yes
Complications
None
Day-date

Pricing

1 specs
MSRP
$1,032
$375
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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.

Orient Kamasu

Owners widely praise the Orient Kamasu for its exceptional value, robust build quality suitable for daily wear, and appealing design features like applied indices and a sunburst dial. Reviewers and owners alike highlight its strong lume, sapphire crystal, hacking and hand-winding F6922 movement, and comfortable, well-proportioned case. However, multiple sources note that the bezel exhibits noticeable play and can sometimes become sticky, while some owners find the bracelet's hollow end links and pressed clasp to be a weak point, with one owner reporting a rattle and another finding the crown difficult to grip. On balance, owners and reviewers rate the Orient Kamasu highly for its impressive finishing and features for the price point, making it a standout value diver.

From video reviewers

The Orient Kamasu's compact package makes it suitable for smaller wrists without compromising wrist presence. A notable weakness is that the bracelet is decent but may have some issues, although the reviewer does not elaborate. Reviewers disagree on the value for money, with one highlighting the affordable price and in-house movement, while the other implies a trade-off in value.

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