Side by side

Christopher Ward C63 Sealander Extreme GMTvsSeiko Prospex LX line

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
Prospex LX line
SeikoProspex LX line
MSRP $6,500

At a glance

16 of 29 specs differ
Diameter
C63 Sealander Extreme GMT48mm
Prospex LX line44.8mm
Power Reserve
C63 Sealander Extreme GMT56h
Prospex LX line72h
Water Resistance
C63 Sealander Extreme GMT150m
Prospex LX line300m
MSRP
C63 Sealander Extreme GMT$1,850
Prospex LX line$6,500

Full specifications

Case

7 specs
Category
GMT
Diver
Diameter
48mm
44.8mm
Thickness
12.05mm
15.7mm
Lug-to-Lug
48mm
50.9mm
Material
Stainless Steel
Titanium
Finish
Brushed + Bead-blasted + Sandblasted
Brushed and polished
Water Resistance
150m
300m

Crystal & Dial

2 specs
AR Coating
Underside
Anti-reflective coating on inner surface
Lume
SLN X1 BL / GL
LumiBrite on hands and index(es)

Movement

6 specs
Caliber
SW330
5R65
Type
Automatic
Spring Drive
Beat Rate
4 vph
28,800 vph
Power Reserve
56h
72h
Jewels
25
30
Complications
GMT, Moonphase, Day-date
None

Pricing

1 specs
MSRP
$1,850
$6,500

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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

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.

Seiko Prospex LX line

Owners widely report the Seiko Prospex LX line's finishing is a step up from other models, with a case that sits well on the wrist, and some praise the green sunburst dial with blue anti-reflective sapphire crystal as phenomenal. However, owners note the high MSRP limited sales, with some desiring smaller cases and a reduced price, and others experienced quality control issues such as detached second hands and peeling DLC coating, leading to concerns about fragility. On balance, owners feel the Seiko Prospex LX line was discontinued due to pricing that alienated its target market, despite its attractive dial.

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