Sartory-Billard SB10 Jumping Hour Black Sapphire | Bracelet | LE300 | Pre-Order

The Sartory-Billard SB10 Jumping Hour Black Sapphire reimagines the independent luxury watch through a striking, contemporary display that eliminates traditional hands entirely. Instead, time is presented through ultra-thin sapphire discs, with a large jumping hour aperture at six o’clock delivering exceptional legibility and a dramatic, instantaneous change every hour. The minutes flow continuously along a luminous peripheral track, creating a compelling contrast between precision and motion. At the center, a smoked black sapphire cabochon replaces the dial, acting as a translucent veil that subtly reveals the underlying mechanics while shifting between reflective, opaque, and transparent tones depending on the light. This innovative layout transforms the watch into a modern statement piece, blending avant-garde design with practical readability.

Pre-order now for May 2026 delivery.
A limited edition of 300 pieces.
Ref. SB101SBLSA

Powered by a Swiss-made La Joux-Perret automatic movement with a 55-hour power reserve, the SB10 pairs reliable performance with a patented jumping hour module for crisp, accurate transitions. The 39.5mm stainless steel case, finished with a mix of polished and brushed surfaces, offers balanced proportions and 80m water resistance for everyday wear. A Super-LumiNova minute ring enhances nighttime visibility with a vivid glow, reinforcing the watch’s dynamic character. This luxury jumping hour watch stands out as a collectible independent timepiece, combining mechanical innovation, sapphire construction, and a bold, design-driven approach to modern horology.


TECHNICAL SPECIFICATIONS
Movement
- Swiss made La Joux-Perret automatic movement
- Patented jumping hour movement
- The La Joux-Perret base movement offers nearly three days of power reserve in its standard configuration. The SB10, however, asks more from it. Its unconventional display replaces traditional hands with two unusually large sapphire discs, combined with a patented mechanism that instantaneously jumps the hour every 60 minutes. The additional energy required by this unique architecture results in an effective power reserve of approximately two days. This is also why an automatic movement is particularly well suited to the SB10, continuously replenishing its energy during regular daily wear
Case
Stainless steel with alternating polished and brushed surfaces
Measurements
- 39.5 mm diameter
- 11.5 mm thickness
- 44 mm lug-to-lug
Cabochon
Smoked black sapphire
Water resistance
80 meters
Strap
Sartory Billard stainless steel bracelet with alternating brushed and polished links, equipped with quick-release pins for easy strap changes


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