Side by side

Christopher Ward C63 True GMTvsSeiko Prospex SPEEDTIMER Mechanical Chronograph

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

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 True GMT

The Christopher Ward C63 True GMT is widely praised for its in-house CW-002 caliber, which offers a 120-hour power reserve and COSC certification. Owners find the 39mm case size comfortable, though some note it wears closer to 40-41mm. While the PVD hands provide good contrast and the lume is praised for readability, one owner felt the orange accent lacked pop and the gloss dial/text combo appeared cheap in certain lighting. One owner also noted a perceived slight difference in production quality compared to a sibling model's bracelet. Overall, owners and reviewers rate the Christopher Ward C63 True GMT highly for its impressive power reserve and COSC-certified movement at its price point.

From video reviewers

The case finishing is praised for its polished and curved surfaces. The watch uses a Sellita SW330-2 movement. Reviewers disagree on the case size, with one noting 40.5mm and another highlighting a 36mm option.

Seiko Prospex SPEEDTIMER Mechanical Chronograph

The Seiko Prospex SPEEDTIMER Mechanical Chronograph is praised for its handsome, heritage-inspired design with a clean, balanced dial and an external tachymeter bezel. Reviewers highlight the upgraded case and bracelet, noting improved comfort and good value for a well-designed chronograph with an in-house movement. The caliber 8R48 movement features a vertical clutch and column wheel with MEMS technology for durability and precision. Points to consider include the 4:30 date window and a 14.6mm thickness, while the 45-hour power reserve is noted as an area for potential improvement. On balance, reviewers find the Seiko Prospex SPEEDTIMER Mechanical Chronograph to be a solid offering with good value, particularly for its design and in-house movement.

At a glance

16 of 29 specs differ
Diameter
C63 True GMT48mm
Prospex SPEEDTIMER Mechanical Chronograph42mm
Power Reserve
C63 True GMT120h
Prospex SPEEDTIMER Mechanical Chronograph45h
Water Resistance
C63 True GMT100m
Prospex SPEEDTIMER Mechanical Chronograph100m
MSRP
C63 True GMT$4,135
Prospex SPEEDTIMER Mechanical Chronograph$2,500

Full specifications

Case

6 specs
Category
GMT
Chronograph
Diameter
48mm
42mm
Thickness
14.15mm
14.6mm
Lug-to-Lug
48mm
49.5mm
Lug Width
22mm
20mm
Finish
Brushed + Polished + Sandblasted

Crystal & Dial

4 specs
Crystal Shape
Curved
AR Coating
Anti-reflective coating on inner surface
Dial Color
Black
Lume
SLN X1 BL C1
LumiBrite on hands and index(es)

Movement

5 specs
Caliber
CW-002
8R48
Beat Rate
4 vph
0 vph
Power Reserve
120h
45h
Jewels
33
34
Complications
GMT, Moonphase, Day-date, Small seconds
None

Pricing

1 specs
MSRP
$4,135
$2,500
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