Side by side

Christopher Ward C1 Jump Hour Mk VvsSeestern S450 Ocean Star

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
S450 Ocean Star
SeesternS450 Ocean Star
MSRP $299

At a glance

13 of 29 specs differ
Diameter
C1 Jump Hour Mk V47.3mm
S450 Ocean Star40mm
Power Reserve
C1 Jump Hour Mk V41h
S450 Ocean Star41h
Water Resistance
C1 Jump Hour Mk V30m
S450 Ocean Star100m
MSRP
C1 Jump Hour Mk V$3,295
S450 Ocean Star$299

Full specifications

Case

6 specs
Category
Diver
Diameter
47.3mm
40mm
Thickness
14mm
12mm
Lug-to-Lug
47.3mm
48mm
Finish
Brushed + Polished + Sandblasted
Brushed and polished
Water Resistance
30m
100m

Crystal & Dial

2 specs
Dial Color
Noon
White
Lume
SLN C1 X1 BL
Tritium

Movement

4 specs
Caliber
SW200
TMI NH35A
Beat Rate
4 vph
21,600 vph
Jewels
26
24
Complications
GMT, Moonphase
GMT, Date

Pricing

1 specs
MSRP
$3,295
$299

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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.

Seestern S450 Ocean Star

Owners widely praise the Seestern S450 Ocean Star's Yachtmaster-style case and flawless bracelet finishing, with one owner noting the ST2130 movement keeps good time. The bezel action is described as having individual notches but feeling like a friction bezel, while another owner flags the bezel and crown action as smooth with perfect alignment. Lume is a point of contention, with one source describing it as a nice cool blue with ice-white application, while others note it as weak or not matching Prospex standards, despite using BGW-9. The watch is considered a "big boy" ideal for larger wrists (19cm+), potentially too large for 17cm wrists due to its size and non-tapering bracelet. Overall, owners rate the Seestern S450 Ocean Star highly for its build quality and finishing at the price point, despite some reservations about its size and lume intensity.

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