Side by side

Christopher Ward C1 Jump Hour Mk VvsSpinnaker Dumas GMT

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

C1 Jump Hour Mk V
Christopher WardC1 Jump Hour Mk V
MSRP $3,095
Dumas GMT
SpinnakerDumas GMT
MSRP $399

At a glance

13 of 29 specs differ
Diameter
C1 Jump Hour Mk V40mm
Dumas GMT44mm
Power Reserve
C1 Jump Hour Mk V41h
Dumas GMT40h
Water Resistance
C1 Jump Hour Mk V30m
Dumas GMT300m
MSRP
C1 Jump Hour Mk V$3,095
Dumas GMT$399

Full specifications

Case

6 specs
Category
GMT
Diameter
40mm
44mm
Thickness
14mm
15mm
Lug-to-Lug
47.3mm
48mm
Lug Width
20mm
22mm
Water Resistance
30m
300m

Crystal & Dial

2 specs
Dial Color
Noon
Blue
Lume
SLN C1 X1 BL
None

Movement

4 specs
Caliber
SW200-1
Seiko NH34A
Beat Rate
4 vph
28,800 vph
Power Reserve
41h
40h
Jewels
26
25

Pricing

1 specs
MSRP
$3,095
$399

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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 C1 Jump Hour Mk V

The Christopher Ward C1 Jump Hour Mk V is praised for its proprietary JJ01 jumping hour complication and multi-level dial design featuring a floating sapphire dial with a lumed jump hour aperture. Reviewers note the 39mm stainless steel case's mix of brushed and polished finishes, with a polished bezel and brushed midcase. The dial's radially grooved center and sapphire minute track with a lumed underside enhance legibility, and the Super-LumiNova execution is described as an eye-catcher. The watch is powered by the JJ01 module atop a Sellita SW200-1 movement, offering a 38-hour power reserve. Accuracy is rated at approximately ±20 seconds per day. Some owners express concerns about the watch's 14mm thickness. Overall, owners and reviewers appreciate the unique dial execution and complication at its price point.

Spinnaker Dumas GMT

Owners praise the Spinnaker Dumas GMT's satisfying lume, including on the crown, and good finishing, with one owner finding it wears well on a 17cm wrist. The watch features a Seiko NH34A GMT movement and a blue gradient dial. Reviewers note its 44mm diameter and 209g weight on the bracelet make it unsuitable for smaller wrists.

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