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KERBEDANZ Maximus – Mechanical Hand-Wound Wristwatch with the World’s Largest Tourbillon Cage

Swiss luxury watch brand KERBEDANZ presents Maximus, an unusual wristwatch housing the world’s largest tourbillon cage measuring 27 millimeters across. A world premiere creation in a limited edition of 99 pieces, the Maximus  was introduced  at the Baselworld trade fair.

With its 27-millimeter cage, which is almost twice the size of the largest one known to date, the biggest wristwatch with tourbillon in the world, by KERBEDANZ, couldn’t be called anything but Maximus. Indeed, the most imposing monument of all of Roman Antiquity is still in Rome to this day and is called the Circus Maximus in Latin and in Italian. This famous venue was used for horse-drawn chariot races. It was built between the Palatine and Aventine Hills in the early 6th century B.C.E. by the Etruscan king, Tarquin the Elder.

The tourbillon was invented by the great watchmaker Abraham Louis Breguet (1747-1823. The complication places the regulating organ of the watch inside a cage that turns on itself, thus varying the position of the regulating elements to compensate for errors due to gravitational forces, to non-concentric development of the balance spring, and the point where it is attached to the collet. In watchmaking, enlarging the size of certain components does not mean just multiplying their size. Everything needs to be reinvented, recomputed. Two patents are pending.

This watch required conception and manufacturing of a special balance spring, a rack with a screw for fine adjustment, and a balance wheel. The cage of this watch makes a full rotation once every six minutes, and not in sixty seconds, which is usually the case.

In terms of energy, the Caliber KRB-08, with its giant central flying tourbillon, in-line pallets, and 27-millimeter cage, boasts four parallel barrel springs that drive a central wheel mounted on ball-bearings. This produces enough power for a tourbillon of such size. It runs at a frequency of 2.5 Hertz, or 18,000 vibrations per hour. The feat lies in being able to develop a power reserve of 48 hours, which is displayed on a separate indicator. The watch is made up of 415 carefully assembled components, of which 73 are dedicated to the tourbillon cage. The latter is made entirely of titanium and only weighs 1.35 grams.

At Baselworld 2017, the beauty shown by KERBEDANZ by the world debut of the Maximus is not only symbolic. It has all the esthetic opulence emanating from meticulous watchmaking balance and scrupulous finishing, like the superb hand-polished beveling, the drawing of the watch’s flanks, the circular-grained wheels, or the mirror polished screws.

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Technical details
Model: Maximus flying Tourbillon
Limited edition of 99 pieces / two patents pending

Caliber KRB-08, with giant central flying tourbillon, in-line pallets, in a 27-millimeter cage making one rotation every six minutes
Mechanical, hand-wound movement, conceived, manufactured and decorated by KERBEDANZ
Balance wheel and hairspring specifically developed for this caliber
34 jewels, 18,000 vibrations per hour (2.5 Hz)
Four barrel springs in parallel driving a central wheel mounted on ball-bearings producing the torque to supply a tourbillon of such size
Over 48 hours of power reserve with indicator
A total of 415 components, tourbillon cage entirely of titanium, made of 73 components, weighing 1.35 grams
Movement diameter: 40 millimeters
Movement height without the cage, 8.35 millimeters; with the cage 13.2 millimeters

–  The tourbillon allows the regulating parts of the watch to rotate, thus achieving different positions to compensate for errors due to gravitational forces, to the nonconcentric development of the balance spring, and to the point where it is attached to the collet.
–  Due to its spectacular size, the tourbillon can be observed and its functioning better understood.
–  The competencies required are the following: design and manufacturing of a balance spring, a rack with a screw for fine adjustment, and a balance wheel.
– Haute horlogerie decoration with polished chamfering, drawing of the watch flanks, circular-grained wheels, mirror polished screws.


Hours, minutes, 6-minutes tourbillon, power reserve indicator

Titanium, platinum, 18-karat rose gold, 49 millimeters in diameter
Designed and manufactured by KERBEDANZ. Sapphire crystal and exhibition case back with antireflective treatment
Water-resistant to 3 atmospheres (30 meters), time-setting crown at 2 o’clock and centralized winding using case back

Exclusively designed, manufactured, hand- decorated by KERBEDANZ

Alligator mississippiensis skin or rubber, 18-karat gold buckle personalized by KERBEDANZ

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