Side by side
Borealis Watch Co. Sea Storm MK2 GMTvsLongines FLAGSHIP HERITAGE MOONPHASE
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
21 of 29 specs differDiameter
Sea Storm MK2 GMT41.50mm
FLAGSHIP HERITAGE MOONPHASE38.5mm
Power Reserve
Sea Storm MK2 GMT40h
FLAGSHIP HERITAGE MOONPHASE72h
Water Resistance
Sea Storm MK2 GMT300m
FLAGSHIP HERITAGE MOONPHASE30m
MSRP
Sea Storm MK2 GMT$415
FLAGSHIP HERITAGE MOONPHASE$3,450
Full specifications
Case
8 specsCategory
Diver
Moonphase
Diameter
41.50mm
38.5mm
Thickness
14.15mm
12.4mm
Lug-to-Lug
48.50mm
46.3mm
Lug Width
20mm
19mm
Finish
Brushed and polished
—
Water Resistance
300m
30m
Caseback
Solid
Screw-down case back
Crystal & Dial
5 specsCrystal Shape
Flat
—
AR Coating
Inner
Both sides
Dial Color
Black
Ivory
Indices
Applied
Applied indexes
Lume
BGW9
Super-LumiNova
Movement
7 specsCaliber
NH34
L899.5
Beat Rate
28,800 vph
25,200 vph
Power Reserve
40h
72h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
Hours, minutes, seconds, moon phase display and date indicated by small hand at
Pricing
1 specsMSRP
$415
$3,450
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