Side by side
Christopher Ward C63 Sealander Extreme GMTvsOak & Oscar The Humboldt GMT USSS Edition
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 GMT40mm
The Humboldt GMT USSS Edition39.5mm
Power Reserve
C63 Sealander Extreme GMT56h
The Humboldt GMT USSS Edition56 hoursh
Water Resistance
C63 Sealander Extreme GMT150m
The Humboldt GMT USSS Edition200m
MSRP
C63 Sealander Extreme GMT$2,075
The Humboldt GMT USSS Edition$2,200
Full specifications
Case
7 specsDiameter
40mm
39.5mm
Thickness
12.05mm
12.5mm
Lug-to-Lug
48mm
46.8mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
150m
200m
Caseback
Solid
Engraved
Crystal & Dial
2 specsCrystal Shape
Flat
Double-domed
Lume
SLN X1 BL / GL
Super-LumiNova BGW9
Movement
4 specsCaliber
SW330-2
Sellita SW330
Beat Rate
4 vph
28,800 vph
Power Reserve
56h
56 hoursh
Complications
GMT
None
Pricing
1 specsMSRP
$2,075
$2,200
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