Side by side

Christopher Ward C63 Sealander Extreme GMTvsSugess Seestern S456 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
Seestern S456 GMT
SugessSeestern S456 GMT
MSRP $299

At a glance

11 of 29 specs differ
Diameter
C63 Sealander Extreme GMT40mm
Seestern S456 GMT40mm
Power Reserve
C63 Sealander Extreme GMT56h
Seestern S456 GMT40h
Water Resistance
C63 Sealander Extreme GMT150m
Seestern S456 GMT200m
MSRP
C63 Sealander Extreme GMT$2,075
Seestern S456 GMT$299

Full specifications

Case

4 specs
Thickness
12.05mm
13mm
Lug-to-Lug
48mm
48.8mm
Lug Width
22mm
20mm
Water Resistance
150m
200m

Crystal & Dial

2 specs
Dial Color
Black
Blue
Lume
SLN X1 BL / GL
Tritium

Movement

4 specs
Caliber
SW330-2
NH34
Beat Rate
4 vph
28,800 vph
Power Reserve
56h
40h
Complications
GMT
GMT, Date

Pricing

1 specs
MSRP
$2,075
$299

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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.

Sugess Seestern S456 GMT

Owners widely praise the Sugess Seestern S456 GMT for its excellent case finishing, deep blue sunburst dial, and crisp indices, with one owner rating the overall fit and finish 9.5 out of 10. The watch is noted for its legibility, strong lume that lasts about 4 hours, and accurate timekeeping around -4 seconds per day, with easy GMT hand adjustment. Some owners report issues with a loose or friction-based unidirectional bezel, while others find theirs tight and prefer a bidirectional GMT bezel. The sapphire crystal is described as clear and flat by some, but others find it very reflective with AR coating that could be improved. Sizing is generally considered good at 39mm with a 46mm lug-to-lug and 12mm thickness, though one owner expresses concern about its 49mm lug-to-lug and 41mm bezel diameter. Overall, owners rate the Sugess Seestern S456 GMT highly for its impressive finishing and dial at its price point.

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