Borealis Watch Co. Sea Storm MK2 GMTvsSpinnaker Hull 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.

Borealis Watch Co. Sea Storm MK2 GMT at true scale

Sea Storm MK2 GMT

Spinnaker Hull Diver at true scale

Hull Diver

Diameter

41.5mm

42mm

Lug-to-Lug

48.5mm

47.5mm

lowest

Thickness

14.2mm

lowest

15mm

Water Resistance

300m

300m

MSRP

$415

$375

lowest

Movement

Seiko NH34

Seiko NH35

Case

5 specs
Diameter
41.5mm
42mm
Thickness
14.15mm
15mm
Lug-to-Lug
48.5mm
47.5mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel

Crystal & Dial

2 specs
Dial Color
n/a
Green
Lume
BGW9
None

Movement

1 specs
Caliber
Seiko NH34
Seiko NH35

Pricing

1 specs
MSRP
$415
$375
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Reviews

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

Borealis Watch Co. Sea Storm MK2 GMT

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.

Spinnaker Hull Diver

The Spinnaker Hull Diver is widely praised for its excellent build quality, with owners highlighting the milled clasp, solid links, and dual-part case construction that contributes to a reduced thickness. Reviewers and owners alike commend its great finishing, accurate Seiko NH35 movement, and the value it offers at its price point, with one owner calling it one of their best affordable watches. The blue dial is noted for its attractive play of light, and the sapphire crystal features a strong anti-reflective coating. However, the lume is considered average by some, and a few owners expressed a desire for a higher beat movement. The screwdown crown is easy to operate, and micro-adjustment on the bracelet allows for a good fit. On balance, owners rate the Spinnaker Hull Diver highly for its exceptional build quality and finishing at an affordable price.

From video reviewers

The cushion case design and solid construction are praised. The bracelet is noted as solid stainless steel.