The tourbillon is a symbol of chronometric precision. Designed to compensate for gravity-induced rate variations in vertical positions, it remains one of the complications that is the most difficult to produce. Corum has achieved an authentic tour de force in equipping its new Caliber CO 1008 with not just one but two parallel-mounted tourbillons, dedicated to ensuring remarkable reliability backed by a generous 72-hour power reserve. This masterfully orchestrated mechanism is fitted with a retrograde date and a particularly innovative time adjustment device. Simply by pressing the crown pushbutton, the wearer can bring the minutes hand instantly to the 12th index so as to set the exact time – and this can be done up to five minutes before or after a full hour.
Caliber CO 1008 finds the perfect stagesetting in the iconic twelve-sided case of the Admiral’s Cup – born in 1960 and redesigned in 2013, while remaining staunchly true to the signature codes that have earned it legendary status. Based on a contemporary architecture featuring alternating polished and satin-brushed finishes, its layered construction comprises black PVD-coated titanium inserts appearing in turn between the case back and middle and then between the bezel and the case middle.
Available in 18K red gold or grade 5 titanium, the case of the Admiral’s Cup AC-One Double Tourbillon displays a generous 45 mm diameter. It is water-resistant to a depth of 300 meters.
The dial swept over by luminescent hands and hour-markers is adorned with an exclusive design specially developed for Corum: the split pomegranate motif. Forming small diagonally-incised squares, this composition creates an depth effect accentuated by the inner bezel ring stamped with the emblematic nautical pennants of the Admiral’s Cup collection.
While the two tourbillons spin on the lower part of the dial, a dynamic red arrow points to the retrograde date segment appearing on the upper part like an extension of the two carriages.
The Admiral’s Cup AC-One 45 Double Tourbillon's transparent back reveals the mechanical caliber oscillating at a frequency of 21,600 vibrations per hour (3 Hz). The movement’s modern execution features a horizontal satin-brushed finish and anthracite grey engravings. Mounted on a mainplate made of cupro-beryllium, a particularly wear-resistant copperbased alloy, it testifies to a determination to endow exceptional horological complications with remarkable long-term reliability.