The Christopher Ward C1 Jump Hour XV is a 300-piece anniversary edition celebrating 15 years of the brand’s Jumping Hour complication, according to Time+Tide’s 2026 introduction. Its reported highlights are a 39 mm Light-catcher case and a dial with concentric guilloché made using a custom femtosecond laser. It retains the C1’s JJ01 jump-hour display, which pairs an hour numeral in an aperture with a conventional minute hand. The XV’s details are reported by watch publications; Christopher Ward’s linked official specification sheet is for the C1 Jump Hour Mk V, not the XV.
What is the C1 Jump Hour XV?
The XV marks the 15th anniversary of Christopher Ward’s first in-house complication: the C1 Jumping Hour. Time+Tide reports the edition is limited to 300 pieces and describes a more compact 39 mm case with a concentric, laser-stamped guilloché dial. Oracle of Time also presents it as an anniversary edition for the JJ01. These are published reports, rather than specifications confirmed in an XV-specific technical sheet.
The name refers to the way the watch displays time. Instead of a central hour hand, a numeral appears through an aperture at 12 o’clock and advances in a jump at the change of each hour; a minute hand shows the minutes. Christopher Ward’s official C1 jumping-hour manual describes the display and calls the Jumping Hour one of the brand’s most distinctive watches since its introduction in 2011.
How the JJ01 movement works
The JJ01 is a jump-hour module built on a Sellita automatic movement. Christopher Ward’s manual identifies it as Johannes Jahnke’s modification of the Sellita SW200-1. The C1 Jump Hour Mk V technical sheet likewise specifies a “Sellita SW200-1 with JJ01 module.” Time+Tide’s XV coverage also identifies a JJ01 module on a Sellita base. This is a modular complication on an automatic base movement; it should not be described as a wholly in-house movement.
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In use, the minute hand moves continuously around the dial while the hour numeral remains visible in its window. At the hour change, the numeral jumps to the next hour. This gives the watch a different visual rhythm from a standard three-hand watch while leaving the minutes immediately readable on the dial.
What is distinctive about the XV’s design?
Reported 39 mm Light-catcher case
Time+Tide reports that the XV uses a 39 mm Light-catcher case and characterizes it as scaled down. The case size may appeal to readers seeking a smaller C1 Jump Hour, but the available official technical sheet is for the Mk V; it does not verify the XV’s case dimensions or other measurements.
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Laser-stamped concentric guilloché
The reported dial feature is a pattern of concentric guilloché produced with a custom femtosecond laser. That construction gives the XV its clearest visual distinction in current coverage. The XV’s exact dial color and further material details are not established in the linked official Mk V sheet.
How does the XV compare with the C1 Jump Hour Mk V?
The Mk V is a useful family reference, but its technical data must not be transferred to the XV. The comparison below separates XV details reported by watch publications from the Mk V figures published by Christopher Ward.
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| Specification or feature | C1 Jump Hour XV | C1 Jump Hour Mk V |
|---|---|---|
| Edition | 300 pieces, reported by Time+Tide in 2026 | Not stated in the official technical sheet |
| Case diameter | 39 mm, reported by Time+Tide | 39 mm, according to Christopher Ward’s official Mk V technical sheet |
| Case height | Not stated in the cited XV coverage | 14 mm, according to the Mk V technical sheet |
| Lug-to-lug | Not stated in the cited XV coverage | 47.30 mm, according to the Mk V technical sheet |
| Water resistance | Not stated in the cited XV coverage | 3 ATM, according to the Mk V technical sheet |
| Strap width | Not stated in the cited XV coverage | 20 mm, according to the Mk V technical sheet |
| Power reserve | Not stated in the cited XV coverage | 38–41 hours, according to the Mk V technical sheet |
| Movement | JJ01 module on a Sellita base, reported by Time+Tide | Sellita SW200-1 with JJ01 module, according to the Mk V technical sheet |
| Dial | Concentric guilloché reportedly stamped by a custom femtosecond laser | Not stated in the cited technical sheet |
| Price and current availability | Not established by the cited sources | Not established here for a direct XV comparison |
The two models share the Jump Hour concept and JJ01 module, but the Mk V sheet cannot settle whether the XV matches the Mk V in height, water resistance, power reserve, strap options, or other specifications. Those details require XV-specific confirmation.
Price, stock and buying information
The cited sources do not establish the XV’s current price, live stock, authorized sales channel, or availability through Amazon or another retailer. The Mk V’s price should not be used as a proxy for the XV. For a purchase decision, confirm the edition’s status, price, and full technical specifications directly with Christopher Ward or an authorized seller before relying on listings or older coverage.
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Who may prefer the XV?
The XV is most relevant to buyers drawn to the jump-hour display and the reported laser-worked dial, particularly those interested in a limited anniversary release. Readers prioritizing a confirmed technical specification should distinguish the XV’s reported 39 mm design from the Mk V’s independently published measurements, and seek a model-specific specification sheet for details beyond the reported case diameter and movement architecture.
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