Borealis Watch Co. Sea Storm MK2 GMTvsCertina DS Action GMT 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.

Sea Storm MK2 GMT

DS Action GMT Powermatic 80
Diameter
41.5mm
41mm
Lug-to-Lug
48.5mm
lowest
49.5mm
Thickness
14.2mm
13.8mm
lowest
Water Resistance
300m
highest
200m
Power Reserve
n/a
80h
MSRP
$415
lowest
$1,286
Movement
Seiko NH34
POWERMATIC 80.661
Case
4 specsCrystal & Dial
1 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Borealis Sea Storm MK2 GMT is noted for its retro aesthetic, featuring modern components, a black and white bezel, and an orange GMT hand. Owners highlight its ample lume and a well-made bracelet. The watch is described as being a relatively thick, yet surprisingly wearable, 41.5mm case size, with a date window that integrates smoothly into the dial. Overall, owners rate the Borealis Sea Storm MK2 GMT highly for its retro vibe and modern execution at its price point.
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.
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