Aeternitas Mega 4 (2009)
Featuring a record-setting 36 complications, 1,483 components, 99 rubies, a 1,000-year calendar and five years of work, each Aeternitas Mega 4 takes one watchmaker approximately six months to assemble. The challenge for the Genthod watchmaker lies in incorporating all the complications in a single wristwatch. The watch features a Westminster-chiming grande and petite sonnerie, a large tourbillon visible on the dial, a minute repeater, a mono-pusher split-seconds chronograph, two 24-hour time zones, a perpetual calendar, an equation of time, a moon phase display and a power reserve indicator. Entirely designed and manufactured by the Franck Muller group, the Mega 4 is in fact the culmination of the Aeternitas project. While the research and development department focused on the case volume and shape, the dial also proved to be a challenge to ensure the display of almost all of the complications at the same time and retain high legibility in line with the design of the various mechanisms. The watch’s iconic Cintrée Curvex case in Pvd-treated white gold measuring 42mm by 61mm features a sapphire crystal caseback enabling the observation of the stunning ballet of harmoniously hand-bevelled, diamond-polished and engraved pieces of the automatic Calibre FM 3480 QPSE with micro-rotor at six o’clock. Equipped with a double barrel, the movement’s first barrel guarantees a power reserve of three days, while the second barrel provides 24 hours of energy for the sonnerie.
The world’s most complicated wristwatch
Price: US$2.7 million