The Jacob & Co. Astronomia Sky is a highly innovative and complex high-end watch collection from the Jacob & Co. brand, perfectly blending astronomical elements with haute horlogerie craftsmanship. Here is a detailed introduction:
Design Inspiration: The design is inspired by celestial bodies and space exploration. The case design resembles an astronomer's observatory, topped with a large sapphire dome, paired with a streamlined gold frame and an integrated full sapphire crystal bezel. The transparent material allows the wearer to fully appreciate the complex internal mechanical structure, as if immersed in the vast universe.
Movement and Complications: Powered by the JCAM11 manual-winding movement, a three-dimensional movement with a central vertical axis, containing 395 components and 42 jewels. The movement features five satellites that rotate both around their individual axes and around the central axis, with the entire platform completing one full rotation in 20 minutes. In addition, it features a triple-axis tourbillon, a diamond moon, a globe, a rotating dial, and an orbital seconds hand, displaying actual sidereal time on a finely crafted blue rotating base.
Special Features: The celestial dial is made of blue Grade 5 titanium with 18K gold stars and hand-engraved zodiac constellations, completing one full rotation in a sidereal year (the actual time it takes for the Earth to orbit the Sun relative to a star). An oval sky indicator displays the visible stars in the Northern Hemisphere (a version displaying the Southern Hemisphere sky is also available upon request), completing one full rotation in a sidereal day (23.5640916 hours). The 12-month display is located on the side of the star dial, with the current date indicated by a perpetual calendar hand. At the center of the satellite axis, a lacquered, hand-engraved titanium globe rotates within a colored semi-circular sapphire crystal dome, symbolizing day and night; through a differential system, the globe completes one full rotation every 24 hours.
Case Material and Size: The case size is typically 47mm in diameter, with some models, such as the Astronomia Sky White Gold, featuring an 18K white gold case.
Representative Models:
Astronomia Sky Rose Gold, White Moon (Jacob & Co...): A rose gold case paired with a white diamond moon, and constellation patterns engraved on the blue titanium movement plates, creating a luxurious and astronomically beautiful design.
Astronomia Sky Yellow Sapphire (Jacob & Co...): A rose gold case paired with a spherical orange sapphire moon, contrasting sharply against the blue titanium dial and gold frame, creating a stunning visual effect.
Astronomia Sky Phoenix: This is a limited edition watch. Around the four arms of the astronomical tourbillon movement is an 18K rose gold phoenix sculpture, meticulously crafted by an artist over seven months, with exquisite detail.
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