Hands-on Jacob & Co. Epic SF24 - A Different (and Spectacular) Rendering of the Traveler's Watch
A split flat display with 24 time zones enlivens the dial of this travel companion.
Jacob Arabo, founder and chairman of Jacob & Co., has a passion for the spectacular and doing things differently. His take on travel watches cannot leave you indifferent. This is a timepiece like no other. The aptly named Jacob & Co. Epic SF24 is a unique-looking timepiece that is high-tech, functional, practical and fun. Certainly not for everyone, but it's really impressive in terms of the way the time indication is displayed.
On the one hand, the SF24 watch is bold and innovative, but also infused with a lot of travel nostalgia. SF stands for Split Flap, as the 24 time zones are displayed on a split flap, reminiscent of the displays once used at airports or train stations - with 24 cities on one side and the corresponding 24-hour time indication on the other. Press the button to the left of the digital GMT indicator and its display advances in one-hour increments - click on a time zone. Scrolling through the different cities one by one is a joy. It's visually cool, very functional and easy to read. Just watch the short video below, it's more telling than any long speech.
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From a technical point of view, the SF24 is more complicated than it looks. This innovative movement is a world first developed by master watchmaker Luca Soprana and patented by Jacob & Co. Overall, the movement contains no less than 473 components and took 18 months to fully develop. It had to solve several technically complex challenges, notably the miniaturization of the split flap mechanism and its integration with the watch movement.
Setting up Epic SF24
Using the Epic SF24 is easy. Start by setting your local time zone city on the splitter by pusher. Set the local time on the crown pulled out in position 2 (it will drive the hours, minutes and hours). Voila, you're ready. To see the time in a different time zone, just press the split button until the desired city is displayed.
Adjusting the local time when traveling is also simple. Once in a different time zone, just set the city name in your time zone in the split flap. Pull the crown to position 1 (it only drives the hour hand). Adjust the hour to the local time on the dial.
The split bezel is always vertical, and the watch has to operate in all positions, adding an extra complication. To this end, the mechanism for controlling the flaps is based on/inspired by the time jump mechanism. The gears visible in the right corner of the dial are the cams that trigger the hourly jumps. The two series of flaps also need to work in sync, which requires perfect indexing.
Working at 4Hz, the JCAA02 movement is self-winding, which is what you've come to expect from a travel watch. It has a power reserve of up to 48 hours.
As you can imagine, the Jacob & Co Epic SF24 has a strong presence on the wrist and is impressive. It looks good, and despite its quirky design and rather spectacular size, it's very comfortable to wear. The split flap cylinders are actually well integrated. The crown has been moved to the 4 o'clock position for greater comfort. Made of gold or titanium, the case is 45mm in diameter and 13.65mm thick (16.70mm for the split flap). It has rubber inserts on the sides.
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The structure is technically complex, with several shapes of sapphire crystal. All have anti-reflective coatings on both sides for optimum legibility. There is also a side window on the cylinder to clearly see the racks that drive the flaps.
On the back, the transparent caseback features a metalized Jacob and Co. decoration with a latitude and longitude pattern. Although the view of the automatic movement is slightly obstructed, its reflection is really eye-catching. The movement is decorated with Côtes de Genève and pearl patterns, and the screw heads are polished. Rotors are cutout and feature the Jacob and Co. logo.
The SF24 is worn on an alligator leather strap with a quick-release spring lever system for easy removal and replacement. It is secured by a folding clasp.
Finally, the Jacob & Co Epic SF24 does what you'd expect from a travel watch. Truly unique and different, it won't be to everyone's taste, but there's no doubt that it's super practical, functional and has an impressive design.
Technical Specifications – JACOB & CO. EPIC SF24
Case: 45mm x 13.65mm (16.70mm with time zone indication) – Titanium, DLC-coated titanium or 18k rose gold – Sapphire crystal with anti-reflective coating on both sides – Clear case back with sapphire crystal – Water resistant to 30m
Movement: Calibre JCAA02 (Concepto base movement) - Self-winding mechanical - 48-hour power reserve - 28,800 vibrations/hour - 34 jewels - Hours, minutes and seconds, instantaneous "split" digital time zone indication
Strap: Alligator leather with folding clasp
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