Side by side

Christopher Ward C63 Sealander Extreme GMTvsSeiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

At a glance

16 of 29 specs differ
Diameter
C63 Sealander Extreme GMT48mm
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition42mm
Power Reserve
C63 Sealander Extreme GMT56h
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition45h
Water Resistance
C63 Sealander Extreme GMT150m
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition100m
MSRP
C63 Sealander Extreme GMT$1,850
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition$2,500

Full specifications

Case

7 specs
Category
GMT
Chronograph
Diameter
48mm
42mm
Thickness
12.05mm
14.6mm
Lug-to-Lug
48mm
49.5mm
Lug Width
22mm
20mm
Finish
Brushed + Bead-blasted + Sandblasted
Brushed and polished
Water Resistance
150m
100m

Crystal & Dial

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

Movement

5 specs
Caliber
SW330
8R48
Beat Rate
4 vph
28,800 vph
Power Reserve
56h
45h
Jewels
25
34
Complications
GMT, Moonphase, Day-date
None

Pricing

1 specs
MSRP
$1,850
$2,500

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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 SPEEDTIMER Seiko 145th Anniversary Limited Edition

Owners widely praise the Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition for its refined presence and intricate dial patterns, with some favoring its unique red dial and steel bezel over other Speedtimer models. However, some owners criticize the 24-hour subdial as useless, the date window as recessed, and the stock bracelet as difficult to fit, while others find the pushers stick out too much. One owner notes the $995 price point is high for the 6R55 movement, suggesting a lower range, though others appreciate the Seiko finishing and charm. On balance, owners rate the Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition well for its unique aesthetic and finishing, despite some functional and value concerns.

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