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 $1,850
Seestern S456 GMT
SugessSeestern S456 GMT
MSRP $299

At a glance

14 of 29 specs differ
Diameter
C63 Sealander Extreme GMT48mm
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$1,850
Seestern S456 GMT$299

Full specifications

Case

6 specs
Diameter
48mm
40mm
Thickness
12.05mm
13mm
Lug-to-Lug
48mm
48.8mm
Lug Width
22mm
20mm
Finish
Brushed + Bead-blasted + Sandblasted
Brushed and polished
Water Resistance
150m
200m

Crystal & Dial

3 specs
AR Coating
Underside
Inner
Dial Color
Black
Blue
Lume
SLN X1 BL / GL
Tritium

Movement

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

Pricing

1 specs
MSRP
$1,850
$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

Owners and reviewers widely praise the Christopher Ward C63 Sealander Extreme GMT for its excellent value, tactical and travel-ready design, and impressive lume, with the black dial being a collective favorite. Its 41mm brushed steel case is noted for comfort and wearability, complemented by a well-proportioned design and excellent legibility. The watch features a Sellita SW330-2 movement with a 56-hour power reserve and 150m water resistance, including a shock-absorbing mount. Some find its refinement slightly less than pricier alternatives, and its GMT movement is considered less practical than a flyer GMT. On balance, the Christopher Ward C63 Sealander Extreme GMT is highly regarded by owners and reviewers for its compelling blend of features, rugged design, and exceptional value.

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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