Certina DS Action GMT Powermatic 80vsSerket Watch Co Reef Mariana

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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 GMT Powermatic 80 at true scale

DS Action GMT Powermatic 80

Serket Watch Co Reef Mariana at true scale

Reef Mariana

Diameter

41mm

40mm

Lug-to-Lug

49.5mm

47.5mm

lowest

Thickness

13.8mm

13.2mm

lowest

Water Resistance

200m

200m

Power Reserve

80h

n/a

MSRP

$1,286

$449

lowest

Movement

POWERMATIC 80.661

Seiko NH35

Case

3 specs
Diameter
41mm
40mm
Thickness
13.8mm
13.2mm
Lug-to-Lug
49.54mm
47.5mm

Crystal & Dial

2 specs
Dial Color
n/a
Orange
Lume
None
BGW9

Movement

2 specs
Caliber
POWERMATIC 80.661
Seiko NH35
Power Reserve
80h
n/a

Pricing

1 specs
MSRP
$1,286
$449
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Reviews

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

Certina DS Action GMT Powermatic 80

The Certina DS Action GMT Powermatic 80 is widely praised for its value, offering a traveler-style GMT with an 80-hour power reserve and flyer functionality. Owners and reviewers highlight its attractive, modern aesthetic and solid build quality, with one owner calling it a watch they are in love with. The green dial is noted as appealing, and the Powermatic 80 movement is considered fairly accurate. However, some find the 13.8mm thickness chunky, and a few owners report minor issues like a misaligned bezel or end links that do not perfectly align with the case. The bracelet's pin-and-collar sizing system is also mentioned as a missed opportunity. Overall, owners and reviewers rate the Certina DS Action GMT Powermatic 80 highly for its compelling value and true GMT functionality.

Serket Watch Co Reef Mariana

Owners widely praise the Serket Watch Co Reef Mariana for its excellent value, citing the sapphire crystal, ceramic bezel, and reliable Seiko NH35 automatic movement at its price point. Some owners note the bezel turns too easily and suggest the lume could be stronger. Overall, owners rate the Serket Watch Co Reef Mariana highly for its eye-catching dial and bezel combination and strong feature set for the price.