Side by side

Christopher Ward C63 Sealander Extreme GMTvsSeestern Sub 300 V4

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
Sub 300 V4
SeesternSub 300 V4
MSRP $10

At a glance

18 of 29 specs differ
Diameter
C63 Sealander Extreme GMT40mm
Sub 300 V442mm
Power Reserve
C63 Sealander Extreme GMT56h
Sub 300 V441h
Water Resistance
C63 Sealander Extreme GMT150m
Sub 300 V4200m
MSRP
C63 Sealander Extreme GMT$2,075
Sub 300 V4$10

Full specifications

Case

9 specs
Category
GMT
Diver
Diameter
40mm
42mm
Thickness
12.05mm
13mm
Lug-to-Lug
48mm
46mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed and polished
Brushed + Sandblasted
Water Resistance
150m
200m
Caseback
Solid
Solid screw-down

Crystal & Dial

3 specs
AR Coating
Inner
Underside
Dial Color
Black
Orange
Lume
SLN X1 BL / GL
Japan Lume (blue glow)

Movement

5 specs
Caliber
SW330-2
Seiko NH35A
Beat Rate
4 vph
21,600 vph
Power Reserve
56h
41h
Jewels
25
24
Complications
GMT
GMT, Date

Pricing

1 specs
MSRP
$2,075
$10

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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.

Seestern Sub 300 V4

Owners widely praise the Seestern Sub 300 V4 for its terrific fit and finish and surprising little touches at its $179 price, noting top-notch case, dial, bezel, and crystal. The bracelet is considered nice enough for the price point, and the watch is powered by the solid and reliable Seiko NH35 movement. Some owners report that the polished sides of the case show signs of wear. Overall, owners rate the Seestern Sub 300 V4 highly for its excellent case, dial, and bezel finishing at the price.

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