Borealis Watch Co. Sea Storm MK2vsSeiko Prospex Sea The Black Series

Add a watch
Sea Storm MK2
Borealis Watch Co.Sea Storm MK2

MSRP $475

See the full watch
Buy from Borealis Watch Co. Used on eBay
Prospex Sea The Black Series
SeikoProspex Sea The Black Series

MSRP $765

See the full watch
Buy from Seiko Used on eBay

lug2lug doesn't sell watches. Buy links open the brand's or seller's own site. Some links are affiliate links: lug2lug may earn a commission at no extra cost to you. Disclosures

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 at true scale

Sea Storm MK2

Seiko Prospex Sea The Black Series at true scale

Prospex Sea The Black Series

Diameter

41.5mm

45mm

Lug-to-Lug

48.5mm

47.7mm

lowest

Thickness

14.2mm

13.2mm

lowest

Water Resistance

300m

highest

200m

Power Reserve

n/a

41h

MSRP

$475

lowest

$765

Movement

Seiko NH38

Seiko 4R36

Case

5 specs
Diameter
41.5mm
45mm
Thickness
14.15mm
13.2mm
Lug-to-Lug
48.5mm
47.7mm
Lug Width
20mm
22mm
Water Resistance
300m
200m

Crystal & Dial

2 specs
AR Coating
n/a
Anti-reflective coating on inner surface
Lume
BGW9
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Seiko NH38
Seiko 4R36
Power Reserve
0h
41h
Jewels
0
24

Pricing

1 specs
MSRP
$475
$765
Keep your wishlist and collection together in the appExplore the app
Get the appGet the app

Similar watches

Matched to the watches above on size, movement, style and price, microbrands first. Open any one to dig in.

All alternatives to the Sea Storm MK2 →All alternatives to the Prospex Sea The Black Series →
Explore the full catalog
DiscussionNot started

Also compared

Comparisons nearby in the catalog: alternatives to the watches above paired against the matchup.

Audaz ADZ-4020vsSeiko Prospex Sea The Black Series
Edit this comparisonMore diver comparisonsBest Diver Watches Under $500Explore more 40-46mm watches