Jacob & Co. has introduced three new bejeweled references of its Astronomia Four-Axis Tourbillon, each limited to six pieces. This evolution of the Astronomia concept features a four-axis tourbillon, a high-frequency remontoir, and a self-leveling time display, all housed within a 47mm rose gold case with a sapphire caseband.
- Limited edition of six pieces per reference
- 47mm x 27mm case size
- 18K rose gold with single-block sapphire caseband
- Manual winding Caliber JCAM54
- 36-hour power reserve
- Water resistant to 30 meters
- Price USD 700,000
The Astronomia Four-Axis Tourbillon features a triple-axis tourbillon that gains a fourth axis from the rotation of the central carrier.
The case, while large at 47mm x 27mm, appears light due to the extensive sapphire crystal and lack of a bezel.
The self-leveling subdial, made of open-worked polycarbonate, remains upright as the carrier completes one revolution around the watch center every minute.
The high-frequency remontoir recharges the intermediate spring six times per second, or at every beat of the balance wheel, for more constant torque.
The watch's design and mechanics are presented as a contrast to the trend toward classic time-only watches, emphasizing horological spectacle and engineering solutions.
The three new references are distinguished by faceted crystals in colorless, green, or red on the sculpted rose gold base.