Side by side

Borealis Watch Co. Sea Storm MK2 GMTvsLongines ULTRA‑CHRON CARBON

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Sea Storm MK2 GMT
Borealis Watch Co.Sea Storm MK2 GMT
MSRP $415
ULTRA‑CHRON CARBON
LonginesULTRA‑CHRON CARBON
MSRP $5,550

At a glance

20 of 29 specs differ
Diameter
Sea Storm MK2 GMT41.50mm
ULTRA‑CHRON CARBON43mm
Power Reserve
Sea Storm MK2 GMT40h
ULTRA‑CHRON CARBON52h
Water Resistance
Sea Storm MK2 GMT300m
ULTRA‑CHRON CARBON300m
MSRP
Sea Storm MK2 GMT$415
ULTRA‑CHRON CARBON$5,550

Full specifications

Case

7 specs
Diameter
41.50mm
43mm
Thickness
14.15mm
14mm
Lug-to-Lug
48.50mm
48.9mm
Lug Width
20mm
22mm
Material
Stainless Steel
Titanium
Finish
Brushed and polished
—
Caseback
Solid
Screw-down case back

Crystal & Dial

5 specs
Crystal Shape
Flat
—
AR Coating
Inner
Both sides
Dial Color
Black
Silver
Indices
Applied
Applied indexes
Lume
BGW9
Super-LumiNova

Movement

7 specs
Caliber
NH34
L836.6
Beat Rate
28,800 vph
36,000 vph
Power Reserve
40h
52h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
Hours, minutes, seconds

Pricing

1 specs
MSRP
$415
$5,550

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