Side by side

Christopher Ward C63 Sealander Extreme GMTvsGrand Seiko SLGA015

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
SLGA015
Grand SeikoSLGA015
MSRP $12,600

At a glance

15 of 29 specs differ
Diameter
C63 Sealander Extreme GMT40mm
SLGA01543.8mm
Power Reserve
C63 Sealander Extreme GMT56h
SLGA015120h
Water Resistance
C63 Sealander Extreme GMT150m
SLGA015200m
MSRP
C63 Sealander Extreme GMT$2,075
SLGA015$12,600

Full specifications

Case

7 specs
Category
GMT
Diver
Diameter
40mm
43.8mm
Thickness
12.05mm
13.8mm
Lug-to-Lug
48mm
51.5mm
Lug Width
22mm
23mm
Material
Stainless Steel
Titanium
Water Resistance
150m
200m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Lume
SLN X1 BL / GL
None

Movement

5 specs
Caliber
SW330-2
9RA5
Type
Automatic
Spring Drive
Beat Rate
4 vph
28,800 vph
Power Reserve
56h
120h
Complications
GMT
None

Pricing

1 specs
MSRP
$2,075
$12,600

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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.

Grand Seiko SLGA015

The Grand Seiko SLGA015 is widely praised for its exceptional accuracy, with owners reporting performance far exceeding the stated 10 seconds per month. The Spring Drive movement's smooth sweep and 5-day power reserve are also noted strengths, as is the lighter titanium case construction. However, some owners find the bracelet extension non-intuitive, and one noted the clasp scratched easily. The watch features a nature-inspired, wave-like dial texture. Overall, owners rate the Grand Seiko SLGA015 highly for its impressive accuracy and quality construction.

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