Side by side

Christopher Ward C63 True GMTvsSeiko Prospex Sea

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

C63 True GMT
Christopher WardC63 True GMT
MSRP $4,135
Prospex Sea
SeikoProspex Sea
MSRP $1,500

At a glance

15 of 29 specs differ
Diameter
C63 True GMT48mm
Prospex Sea43.5mm
Power Reserve
C63 True GMT120h
Prospex Sea70h
Water Resistance
C63 True GMT100m
Prospex Sea200m
MSRP
C63 True GMT$4,135
Prospex Sea$1,500

Full specifications

Case

7 specs
Category
GMT
Diver
Diameter
48mm
43.5mm
Thickness
14.15mm
13.3mm
Lug-to-Lug
48mm
51mm
Material
Stainless Steel
Titanium
Finish
Brushed + Polished + Sandblasted
Brushed and polished
Water Resistance
100m
200m

Crystal & Dial

2 specs
AR Coating
Inner
Anti-reflective coating on inner surface
Lume
SLN X1 BL C1
LumiBrite on hands and index(es)

Movement

5 specs
Caliber
CW-002
6R35
Beat Rate
4 vph
28,800 vph
Power Reserve
120h
70h
Jewels
33
24
Complications
GMT, Moonphase, Day-date, Small seconds
None

Pricing

1 specs
MSRP
$4,135
$1,500

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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 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 Sea

Seiko Prospex Sea owners and reviewers praise its Marinemaster-style aesthetic, excellent case finishing, and impressive LumiBrite lume. The watch is powered by the 6R15 movement with a 50-hour power reserve and comes with both a steel bracelet and a silicone strap. Some owners find the Seiko Prospex Sea to be a great value and a suitable first "proper" watch, while others report it is uncomfortably big, thick, and heavy on smaller wrists. Reviewers note the GMT function is secondary with a less prominent scale, and the bezel's quieter clicks may not appeal to all. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its classic design and finishing at its price point.

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