With its groundbreaking city-time display, the Epic SF24 Tourbillon enters a bold new dimension entirely undiscovered by traditional watches. Named after its Split-Flap, 24-city, vertical second time zone display, the Epic SF24 Tourbillon is a jet-set world-traveler's watch that is unique in its complexity and utility. Remarkably challenging to engineer and manufacture, yet easy and intuitive to use: the functionality and design of the Epic SF24 render it prepared to take on the world.

The Exclusive JCAA03 Caliber powers the Epic SF24 Tourbillon and all its time indications. The time on the main dial is set via the crown located at the 4 o'clock position of the case. Once the hours and minutes have been set, the World Time Display is to be adjusted via the pusher dedicated to this purpose. With this done, the main dial and the second time zone display work together through a fully mechanical connection: as the main dial advances to the following hour, so does the split-flap hour display, making for a highly engineered audible and visible feat - not just when it is adjusted, but also once every hour, throughout its operation.

Comprising 528 components, including 163 for the Split-Flap display, the JCAA03 caliber's 48-hour power reserve is replenished by a self-winding rotor mechanism. Finished with high-end Cotes de Geneve, circular perlage graining and anglage decoration techniques, it tastefully combines the values of traditional horology with the achievements only possible in cutting-edge, ultra-modern watchmaking.

Whereas the tourbillon was originally invented to be a single-axis, rotating cage secured from above as well as below to carry the regulating organ of a mechanical pocket watch for improved timekeeping performance, the Epic SF24 Tourbillon presents this 224-year-old invention in a yet more spectacular way.

The one-minute flying tourbillon of the Epic SF24 Tourbillon features a delicately decorated cage that encapsulates the balance wheel, hairspring, escape wheel and a number of other crucially important components. This openworked cage not only features an elaborate web-pattern in its architecture, but is only secured from underneath, allowing for an unobstructed and full view at the ultimate refinement of its detailing and operation. It is a constellation of superbly finished components that, when assembled and fine-tuned expertly, allows the JCAA03 to keep accurate time throughout its 48-hour power reserve.

The case of Epic SF24 Tourbillon measures 45 millimeters in diameter and 13.65 millimeters thick at its center, and 16.70 millimeters between the top of its World Time Display and the lowest point of its case. Its case is crafted from 18K rose gold, set with 79 baguette-cut white diamonds. The case sides, pusher and crown are inset with honeycomb pattern rubber. An anti-reflective sapphire crystal covers the main dial, and a specially curved sapphire crystal safeguards the Split-Flap display, allowing for unhindered viewing of its operation and the spectacular mechanisms inside. The case-back also features a sapphire crystal pane, with a Jacob & Co metallized decor, proudly stating the name of the Epic SF24 Tourbillon's creator.

The Epic SF24 Tourbillon comes with city name or honeycomb pattern dial in anthracite opalin, with baton hour markers for the main dial. Above it extends the Split-Flap display for the World Time's city name and its respective hour indication, in high contrast black and white. The skeletonized central hands and the hour indices have luminescent coating for increased legibility under all circumstances.

Unique world time movement and display, exclusive to Jacob & Co.

Inspired by old-time split-flap boards in airports and train stations

24 time zones available at the push of a button

Time zones are customizable

18K rose gold case set with 79 baguette-cut white diamonds (≈ 8.13 ct.)

Black lacquered dial set with 25 baguette-cut white diamonds (≈ 0.85 ct.)

Extremely easy to set, use, and read. No need for reading glasses here - the cities are bold and large enough to read easily

Know the time anywhere in the world at a glance (or at the push of a button)

Advance the world time display by the push button on the side of the horizontal display

Advance the local time by one hour at a time using the crown

Flying tourbillon-powered movement

Special case design, integrating the split-flap world time display and the local time display

A sapphire crystal-covered window exposes the intricacies of the patented split-flap mechanism