Bremont Supermarine 300MvsCertina DS Action Diver 40.5mm Powermatic 80

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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.

Bremont Supermarine 300M at true scale

Supermarine 300M

Certina DS Action Diver 40.5mm Powermatic 80 at true scale

DS Action Diver 40.5mm Powermatic 80

Diameter

40mm

40.5mm

Lug-to-Lug

n/a

45.0mm

Thickness

12mm

lowest

13.2mm

Water Resistance

300m

300m

Power Reserve

n/a

80h

MSRP

$3,550

$1,032

lowest

Movement

Bremont BE-92AE

POWERMATIC 80.611

Case

5 specs
Diameter
40mm
40.5mm
Thickness
12mm
13.22mm
Lug-to-Lug
n/a
45.01mm
Lug Width
20mm
19mm
Material
904L Stainless Steel
Stainless Steel

Crystal & Dial

1 specs
Dial Color
Green
n/a

Movement

2 specs
Caliber
Bremont BE-92AE
POWERMATIC 80.611
Power Reserve
0h
80h

Pricing

1 specs
MSRP
$3,550
$1,032
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Reviews

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

Bremont Supermarine 300M

The Bremont Supermarine 300M is praised for its comfortable 40mm case, which some owners find wears well even on smaller wrists due to its lug design, outperforming some 40mm watches. One forum contributor notes the 40mm case is relatively compact for a 300m diver and is priced at $1375. A reviewer found the 40mm case comfortable. On balance, owners and reviewers appreciate the Bremont Supermarine 300M's wearable 40mm case size and comfortable wearability.

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.

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