SB10 Pulse

The Sartory Billard SB10 Black Sapphire is built around a simple but radical idea. Remove the dial. Remove the hands. Strip time down to its essential movements and rebuild how it is experienced. Created for the brand’s tenth anniversary, the SB10 takes the core concept of the SB08 and distils it into something wearable, without losing the identity that made the original idea so compelling.

At the centre of the watch sits a smoked black sapphire cabochon. It is not decorative. It replaces the dial entirely. Acting as a dark, semi-transparent surface, it reveals just enough of the internal mechanics to create depth without exposing everything. Depending on the light, it shifts between opaque, reflective, and translucent. Time is displayed without hands. At six o’clock, a large jumping hour aperture delivers instant legibility. The numerals, printed on sapphire, are deliberately oversized, nearly twice the scale of traditional jumping hour watches. The result is immediate, clear, and intentional.

Surrounding the cabochon, the minutes are tracked by a rotating sapphire disc. A luminous ring completes a full rotation every hour, with a red marker indicating the precise minute. The motion is continuous and fluid, creating a contrast between the sharp jump of the hour and the smooth orbit of the minutes. In low light, the watch transforms. The Super-LumiNova ring becomes a suspended turquoise halo, floating around the cabochon, turning time into something visual and atmospheric rather than purely functional.

Powering the SB10 is the La Joux-Perret G100 automatic calibre, paired with a patented jumping-hour mechanism that delivers a precise and instantaneous change every 60 minutes. In its standard configuration, the La Joux-Perret base movement provides nearly three days of power reserve. The SB10, however, demands considerably more energy. Its unconventional display replaces traditional hands with two unusually large sapphire discs, while the instantaneous jumping-hour mechanism adds a further energy requirement. As a result, effective power reserve is approximately two days. This architecture also makes an automatic movement particularly well suited to the SB10, continuously replenishing its energy through regular daily wear.

The entire system is housed within a balanced 39.5mm stainless steel case, maintaining comfortable wearability while allowing the architecture of the display to dominate.

This is not about complication or tradition. It is about changing how time is seen, and more importantly, how it is felt.