This Duomètre à Quantième Lunaire brilliantly illustrates the extreme research undertaken in the laboratory-workshops of Jaeger-LeCoultre: this watch reaches the heights of precision with a jumping second hand moving in sixth of a second increments while displaying the date and the moon phase on a separate subdial.

The truly extraordinary appearance of the watch lies in the actual concept behind the Dual-Wing movement, which is distinguished by the presence of two independent energy sources: the first, regulated by the escapement and the balance, is entirely dedicated to the precise measurement of the passing of time; whereas the second source of energy is devoted to the display of the functions: hours, minutes, seconds, calendar and moon phases for both hemispheres. Their synchronisation is ensured by the jumping seconds hand mechanism.

Through in-depth study and a willingness to challenge the fundamental principles of horological theory, the Jaeger-LeCoultre specialists have succeeded in creating a calendar watch in accordance with the Dual-Wing concept – a principle featuring exceptional characteristics that enable a degree of rating precision that was previously the exclusive preserve of timepieces free of any complications.

Only the expertise accumulated over 178 years could thus enable Jaeger-LeCoultre to begin writing a new chapter in the history of Fine Watchmaking…

Jaeger-LeCoultre looks forward to revealing many other watch creations at SIHH 2012 (Salon International de la Haute Horlogerie) that will be held 16 - 20 January in Geneva, Switzerland.

www.jaeger-lecoultre.com