Certina DS Action GMT Powermatic 80vsSeiko Prospex Sea

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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

Seiko Prospex Sea at true scale

Prospex Sea

Diameter

41mm

41.3mm

Lug-to-Lug

49.5mm

48.2mm

lowest

Thickness

13.8mm

12.5mm

lowest

Water Resistance

200m

300m

highest

Power Reserve

80h

highest

72h

MSRP

$1,286

$1,100

lowest

Movement

POWERMATIC 80.661

Seiko 6R55

Case

4 specs
Diameter
41mm
41.3mm
Thickness
13.8mm
12.5mm
Lug-to-Lug
49.54mm
48.2mm
Water Resistance
200m
300m

Crystal & Dial

2 specs
AR Coating
n/a
Anti-reflective coating on inner surface
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
POWERMATIC 80.661
Seiko 6R55
Power Reserve
80h
72h
Jewels
0
24

Pricing

1 specs
MSRP
$1,286
$1,100
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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.

Seiko Prospex Sea

Owners and reviewers widely praise the Seiko Prospex Sea for its robust build quality and fair price, with many noting its comfortable silicone strap. Some owners find the watch's size, thickness, and weight to be uncomfortable for smaller wrists, while others consider the size perfect. The consensus is that the Seiko Prospex Sea offers excellent value and build quality for its price.

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