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 $3,295
Dumas GMT
SpinnakerDumas GMT
MSRP $399

At a glance

15 of 29 specs differ
Diameter
C1 Jump Hour Mk V47.3mm
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$3,295
Dumas GMT$399

Full specifications

Case

7 specs
Category
GMT
Diameter
47.3mm
44mm
Thickness
14mm
15mm
Lug-to-Lug
47.3mm
48mm
Lug Width
20mm
22mm
Finish
Brushed + Polished + Sandblasted
Brushed and polished
Water Resistance
30m
300m

Crystal & Dial

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

Movement

5 specs
Caliber
SW200
Seiko NH34A
Beat Rate
4 vph
28,800 vph
Power Reserve
41h
40h
Jewels
26
25
Complications
GMT, Moonphase
None

Pricing

1 specs
MSRP
$3,295
$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

Owners and reviewers widely praise the spectacular lume application and the multi-level dial design of the Christopher Ward C1 Jump Hour Mk V, noting its crisp legibility and the innovative JJ01 jump-hour module. The 39mm case is described as compact with alternating brushed and polished finishing, and the dial features a radially grooved center with a sapphire minute track. Some find the 14mm thickness and $3k price point high, while accuracy is rated at approximately ±20 seconds per day. The watch utilizes a Sellita SW200-1 base with a 38-hour power reserve. Overall, owners and reviewers appreciate the striking dial design and jump-hour complication, despite some reservations about the thickness and accuracy.

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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