The Astronomia Sky elevates the Astronomia concept beyond mechanical spectacle by introducing an intricate representation of the night sky. Designed for collectors fascinated by astronomy as much as haute horlogerie, this remarkable timepiece displays a rotating celestial chart that mirrors the apparent movement of the stars while simultaneously presenting sidereal time—an astronomical measurement used by observatories to track the Earth’s rotation relative to distant stars. Every revolution celebrates humanity’s enduring fascination with the cosmos while showcasing Jacob & Co.’s uncompromising creativity.

Beneath the towering sapphire crystal dome, the movement performs an extraordinary mechanical ballet driven by a manually wound manufacture calibre. The flying tourbillon, rotating celestial display and inclined time dial operate in perfect harmony through an exceptionally complex system of gears engineered entirely in-house. Finished to the highest standards with polished bridges, hand-decorated components and architectural movement construction, the Astronomia Sky is one of the most technically imaginative astronomical wristwatches ever created, offering collectors an unparalleled fusion of science, engineering and artistic expression.