Side by side

Christopher Ward C1 Jump Hour Mk VvsSeiko Prospex Sea

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
Prospex Sea
SeikoProspex Sea
MSRP $1,100

At a glance

16 of 29 specs differ
Diameter
C1 Jump Hour Mk V47.3mm
Prospex Sea41.3mm
Power Reserve
C1 Jump Hour Mk V41h
Prospex Sea72h
Water Resistance
C1 Jump Hour Mk V30m
Prospex Sea300m
MSRP
C1 Jump Hour Mk V$3,295
Prospex Sea$1,100

Full specifications

Case

7 specs
Category
Diver
Diameter
47.3mm
41.3mm
Thickness
14mm
12.5mm
Lug-to-Lug
47.3mm
48.2mm
Material
316L Stainless Steel
Stainless Steel
Finish
Brushed + Polished + Sandblasted
Brushed and polished
Water Resistance
30m
300m

Crystal & Dial

3 specs
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Noon
Black
Lume
SLN C1 X1 BL
LumiBrite on hands, index(es) and bezel

Movement

5 specs
Caliber
SW200
6R55
Beat Rate
4 vph
28,800 vph
Power Reserve
41h
72h
Jewels
26
24
Complications
GMT, Moonphase
None

Pricing

1 specs
MSRP
$3,295
$1,100

Follow this matchup

Get a note when Christopher Ward C1 Jump Hour Mk V vs Seiko Prospex Sea gets more votes, a community discussion, or a price drop. No account needed.

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.

Seiko Prospex Sea

Seiko Prospex Sea models are widely praised for their excellent build quality, value for money, and comfortable wearability, with many appreciating the vintage-inspired designs and robust construction. Owners note the silicone straps are surprisingly comfortable and well-finished, and the Lumibrite lume is excellent. However, some find the 44.3mm size and thickness too large for smaller wrists, though others report the sizing as perfect. The 6R15 movement in some variants offers accuracy around +4 seconds per day with a 50-hour power reserve, while newer movements offer more. Some models are criticized for a bracelet width not matching the case size or a rudimentary clasp for their price point. Overall, owners and reviewers rate the Seiko Prospex Sea highly for its impressive case work and finishing at its price point.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.