GRAVITY-DEFYING ROTATIONS
An eye-catching tourbillon makes a spectacular rotation on the cutaway dial of Jaeger-LeCoultre Duomètre Sphérotourbillon.
The tourbillon revolves around the axis in its titanium cage as well as around a second axis tilted at 20 degrees. These two distinct and rapid rotations (30 and 15 seconds respectively) enables the watch to defy the effects of gravity in all changing positions when it is worn on the wrist.
Driven by Calibre 382 with a 50-hour power reserve, the 42mm pink gold model is engineered under the Dual-Wing concept, which resolves a recurrent problem on complex mechanical watches caused by complications naturally using up some of the power provided by the barrel.
This energy consumption disrupts the constant supply required by a regulating organ to fulfil its function as precisely as possible.
Jaeger-LeCoultre’s solution separates energy provision to the complication from that to the movement, which is fed by its own barrel, thus assuring a constant level of power supply for the accurate measurement of time.
Reflecting the Dual-Wing concept, the left side of the timepiece reveals the playful spherotourbillon whereas the right side tactfully displays a main dial indicating local time and date.
An additional 24-hour subdial above shows the time in another time zone while a dedicated seconds counter occupies the lower part of the magnetite grey dial with an opaline finish
The small seconds hand can be reset to zero according to the flyback principle by using a push-piece at 2 o’clock. The flyback mechanism though does not stop the function of the regulating organ, thus maintaining the watch’s precision, accurate to one second, when setting the time.