Side by side
Christopher Ward C63 Sealander Extreme GMTvsBorealis Watch Co. Jamanta
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
14 of 29 specs differDiameter
C63 Sealander Extreme GMT48mm
Jamanta42.50mm
Power Reserve
C63 Sealander Extreme GMT56h
Jamanta40h
Water Resistance
C63 Sealander Extreme GMT150m
Jamanta300m
MSRP
C63 Sealander Extreme GMT$1,850
Jamanta$415
Full specifications
Case
7 specsCategory
GMT
Diver
Diameter
48mm
42.50mm
Thickness
12.05mm
13.30mm
Lug-to-Lug
48mm
50.40mm
Lug Width
22mm
22mm
Finish
Brushed + Bead-blasted + Sandblasted
Brushed and polished
Water Resistance
150m
300m
Crystal & Dial
2 specsAR Coating
Underside
Inner
Lume
SLN X1 BL / GL
BGW9
Movement
4 specsCaliber
SW330
Miyota 9015
Beat Rate
4 vph
28,800 vph
Power Reserve
56h
40h
Complications
GMT, Moonphase, Day-date
None
Pricing
1 specsMSRP
$1,850
$415
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