Side by side

Christopher Ward C63 Sealander Extreme GMTvsOak & Oscar The Humboldt GMT

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

C63 Sealander Extreme GMT
Christopher WardC63 Sealander Extreme GMT
MSRP $2,075
The Humboldt GMT
Oak & OscarThe Humboldt GMT
MSRP $2,175

At a glance

16 of 29 specs differ
Diameter
C63 Sealander Extreme GMT40mm
The Humboldt GMT39.5mm
Power Reserve
C63 Sealander Extreme GMT56h
The Humboldt GMT56 hoursh
Water Resistance
C63 Sealander Extreme GMT150m
The Humboldt GMT200m
MSRP
C63 Sealander Extreme GMT$2,075
The Humboldt GMT$2,175

Full specifications

Case

8 specs
Diameter
40mm
39.5mm
Thickness
12.05mm
12.5mm
Lug-to-Lug
48mm
46.8mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed and polished
Brushed
Water Resistance
150m
200m
Caseback
Solid
Solid screw-down

Crystal & Dial

4 specs
Crystal Shape
Flat
Double-domed
AR Coating
Inner
Underside
Dial Color
Black
White
Lume
SLN X1 BL / GL
Super-LumiNova

Movement

3 specs
Caliber
SW330-2
Sellita SW330
Power Reserve
56h
56 hoursh
Complications
GMT
None

Pricing

1 specs
MSRP
$2,075
$2,175

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Christopher Ward C63 Sealander Extreme GMT

The Christopher Ward C63 Sealander Extreme GMT is widely praised as a competent and comfortable tool watch offering excellent value. Reviewers consistently highlight its impressive Globolight lume, providing excellent legibility, and its well-proportioned 41mm brushed steel case. The Sellita SW330-2 movement is noted as reliable, though its standard accuracy is stated as ±20 seconds per day, and its GMT functionality is considered less advanced than some alternatives. One owner notes the green dial can be an acquired taste, and hands and markers are considered less refined than those on significantly more expensive watches. The Christopher Ward C63 Sealander Extreme GMT is priced attractively at €1,895 on bracelet. Overall, owners and reviewers highly regard the Christopher Ward C63 Sealander Extreme GMT for its rugged, travel-ready design and impressive lume at its price point.

Oak & Oscar The Humboldt GMT

Oak & Oscar The Humboldt GMT owners widely praise its exceptional accuracy, often running at or near 0 seconds per day, and its comfortable wearability with subtle design details. The construction quality for the price point, sandwich lume, and anti-magnetic properties are also highlighted. Some owners find the bracelet sizing adjustment slightly awkward, and one noted the lume could be brighter. Overall, owners rate the Oak & Oscar The Humboldt GMT highly for its accuracy and comfortable wearability.

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