Borealis Watch Co. Sea Storm MK2 GMTvsOrient AC0Q-40 Diver
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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

AC0Q-40 Diver
Diameter
41.5mm
39.9mm
Lug-to-Lug
48.5mm
46.5mm
lowest
Thickness
14.2mm
12.8mm
lowest
Water Resistance
300m
highest
200m
Power Reserve
n/a
40h
MSRP
$415
$370
lowest
Movement
Seiko NH34
Orient F6722
Case
4 specsCrystal & Dial
2 specsMovement
7 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.
Owners praise the Orient AC0Q-40 Diver Watch for its value, sapphire crystal, and durable build quality, with many appreciating the 39.9mm case size for its smaller, trendy appeal and the raw steel bezel for a vintage look. The bracelet features folded end links, and while the in-house automatic Orient F6722 movement is considered a good workhorse, the watch is not ISO certified for diving, though suitable for swimming. Unless a purple dial is specifically desired, other color options are recommended. On balance, owners rate the Orient AC0Q-40 Diver Watch highly for its appealing design and value proposition in a compact package.
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