Side by side

Christopher Ward C63 Sealander Extreme GMTvsGrand Seiko SBGE307

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
SBGE307
Grand SeikoSBGE307
MSRP $11,500

At a glance

14 of 29 specs differ
Diameter
C63 Sealander Extreme GMT40mm
SBGE30744.5mm
Power Reserve
C63 Sealander Extreme GMT56h
SBGE30772h
Water Resistance
C63 Sealander Extreme GMT150m
SBGE307200m
MSRP
C63 Sealander Extreme GMT$2,075
SBGE307$11,500

Full specifications

Case

6 specs
Diameter
40mm
44.5mm
Thickness
12.05mm
14.9mm
Lug-to-Lug
48mm
50mm
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
9R66
Type
Automatic
Spring Drive
Beat Rate
4 vph
28,800 vph
Power Reserve
56h
72h
Complications
GMT
None

Pricing

1 specs
MSRP
$2,075
$11,500

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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 SBGE307

The Grand Seiko SBGE307 is praised for its unique "lion's mane" textured ivory dial and angular, modern titanium case featuring Zaratsu polishing. Reviewers highlight the aggressive, claw-shaped lugs and the contrasting hairline finishing, as well as the brownish-red GMT hand as a notable accent. The watch is powered by the 9R66 Spring Drive movement, offering a 72-hour power reserve and accuracy rated at +/- 15 seconds per month by one source, and +/- 1 second per day by another. It is priced at $10,700 USD and offers 200m water resistance. On balance, reviewers find the Grand Seiko SBGE307 to be a striking timepiece distinguished by its textured dial and sharp case finishing.

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