SB10 Jumping Hour

The Essence of SB10 Jumping Hour

For its tenth anniversary, Sartory-Billard unveils SB10 Jumping Hour, a watch that captures the heartbeat of an idea once considered impossible. Minimalist, tactile and deeply horological, the SB10 Jumping Hour is born from the spirit of the SB08, a concept presented in 2024, admired everywhere yet too complex to enter production.

And yet, something from the SB08 endured. Its central idea was simple. A way of reading time that is clear, poetic and rooted in material. SB10 Jumping Hour is that idea made possible, distilled, accessible and unmistakably faithful to Sartory-Billard’s DNA.

“I couldn’t give up what made the SB08’s soul,” explains Armand Billard. “That wide hour opening, incredibly legible, the fluid reading of the minutes, and above all that immense surface freed on the dial, a true blank canvas for creativity.”

With SB10 Jumping Hour, that blank page becomes a material you can touch.

A Reinvented Way of Reading Time

SB10 Jumping Hour reimagines how a jumping hour watch can express itself and how it can be felt.

A Generous Hour Aperture

Positioned at six o’clock, the hour window is intentionally generous. In contrast with most jumping hour watches, the display is clear, immediate and natural.

The hour numeral appears in an exceptional size, almost twice as large as on many traditional jumping hour watches, instantly reinforcing legibility.

The numerals, printed on a sapphire disc, were designed specifically for Sartory-Billard by typographer Simon Schmidt. The result is a visual identity that is both contemporary and timeless.

Minutes Floating Around the Cabochon

SB10 Jumping Hour replaces the traditional hand with a sapphire disc whose ring, coated in Super-LumiNova BGW9, completes a full rotation every sixty minutes. A vivid red marker indicates the exact minute position within this luminous ring.

The motion is gentle, calming and almost hypnotic, like a silent orbit. A slow movement that gives the impression that time itself is breathing.

At night, the ring becomes a turquoise blue halo suspended in the darkness.

Time no longer seems to flow. It revolves. Reading the time becomes almost atmospheric, a luminous circle slowly orbiting the central material.

A small celestial phenomenon on the wrist.

A Cabochon Instead of a Dial

The most radical aspect of the SB10 Jumping Hour is the complete absence of a traditional dial. In its place sits a cabochon mounted externally like a precious stone. This can be natural stone, guilloché metal, or even tinted sapphire. Each cabochon possesses its own personality. This choice is not merely aesthetic. It deliberately creates a bridge between two worlds that are usually separate, watchmaking and jewelry.

The cabochon is not interchangeable once bought. It is an integral part of the watch and creates an intimate bond between the object and its owner.

A watch you look at. A watch you touch. A surface you instinctively brush with your fingers, as if to feel the material come alive under the light. In a world where many dials look alike, SB10 Jumping Hour restores the importance of material and its emotional power.

The Two Inaugural Editions

For its launch, SB10 Jumping Hour reveals itself through two founding interpretations, each exploring a different facet of the central material.

Disco Ball — the cabochon of light

The first version, named Disco Ball, features a guilloché steel cabochon.

Its faceted pattern captures and reflects the surrounding light, creating reflections that constantly evolve. With every movement of the wrist, the surface appears to shimmer and shift. The guilloché is not only visual. It also offers a tactile texture that can be felt under the fingertips.

Black Sapphire — mechanical transparency

The second version, Black Sapphire, features a smoked sapphire cabochon.

This subtle transparency partially reveals the watch’s internal architecture. We can catch a glimpse of the jumping hour disc, the mechanical module and the new hour typography. The sapphire acts like a dark veil, allowing the mechanics to appear without revealing them entirely. The minute ring in Super-LumiNova absorbs light during the day and offers a spectacular display at night.

An Architecture Designed with Intention

Beneath this apparent simplicity lies a solid and coherent mechanical construction.

At the heart of the watch is the G100 calibre from La Joux-Perret, chosen for its reliability and comfortable power reserve. It is topped by a patented jumping hour module that ensures a crisp and precise jump.

Both the hour and minute discs are crafted in sapphire and integrated within a 39.5 mm 316L steel case whose proportions echo the SB04-E while introducing a new sense of openness.

Every technical decision serves the same vision: clarity, coherence and evidence.

From the SB08 to the SB10 Jumping Hour

The SB08 was a dream of haute horlogerie.

A multi sapphire watch with a remontoir d’égalité tourbillon whose development would have required more than one million euros. It was destined to remain an admired yet inaccessible concept. Its emotion and its idea, however, deserved to be carried forward.

SB10 Jumping Hour is not a simplification. It is a distillation. It preserves the essentials: the wide hour aperture, the fluid minute display, the liberated central surface and the poetry of material. It transforms this vision into a watch designed for everyday life in a format that many more collectors can experience.

A dream made possible.

Technical Specifications

Case

316L stainless steel, 39.5 mm
Sapphire crystal
Open caseback

Movement

Calibre G100 (La Joux-Perret)
55 hour power reserve
Patented jumping hour module

Display

Jumping hour at 6 o’clock
Sapphire hour disc with exclusive typography
Sapphire minute disc with 60 minute rotation and peripheral Super-LumiNova BGW9 ring
Red minute marker

Dial

No traditional dial
Fixed cabochon in stone, guilloché metal, sapphire

Price and Availability

The Sartory-Billard SB10 Jumping Hour starts at €3,800 excl. VAT.

Two inaugural versions are available:

Disco Ball with guilloché steel cabochon

Black Sapphire with smoked sapphire cabochon

Produced in limited annual batches.

A New Chapter for Sartory-Billard

To celebrate its tenth anniversary, Sartory-Billard does not look backwards. The brand moves forward, faithful to its values: sincerity, mastery, coherence and creative freedom.

SB10 Jumping Hour is not a variation. Not a tribute. Not a compromise. It is a manifesto. A watch designed to be felt as much as read. A new way of experiencing time.

SB10 Jumping Hour — Feel the time.

About Sartory-Billard

Sartory-Billard is an independent French watch brand founded in 2015 by designer Armand Billard. Rooted in an industrial design approach, the brand creates watches defined by intention, material, and coherence.

Known for its strong focus on dial work—ranging from mirror-polished titanium to hand guilloché and rare materials—each piece is conceived as a singular object rather than a status symbol. Sartory-Billard operates across bespoke commissions and limited editions, maintaining the same level of rigor and personal expression.

With the development of proprietary movements through its Swiss structure, Horocraft, the brand continues to pursue greater technical independence while remaining committed to its core values of sincerity, mastery, and individuality.