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Jaeger-LeCoultre
Reverso Gyrotourbillon 2

After the stunning revelation of the Gyrotourbillon I, Jaeger LeCoultre is offering the spherical Tourbillon, a new stage-setting worthy of its technically innovative nature: the swivelling case of the Reverso in its Reverso Gyrotourbillon 2. This extraordinary watch mechanism overturns long-established principles, since it represents the first time that a wristwatch houses a cylinder-shaped balance-spring.

Embodying a mechanical marvel, the spherical Tourbillon and the hundred or so parts composing it exercise an irresistible fascination by the complexity, speed and beauty of its three-dimensional motion.

The second version of the Gyrotourbillon is distinguished by an essential organ: the presence of a cylinder-shaped balance-spring with end curves. Combined with the advantages of the spherical Tourbillon, this innovation is a breakthrough in the field of accuracy and paves the way for a level of rating precision that is simply unprecedented on a timepiece designed to follow its wearer’s arm movements.

The Reverso Gyrotourbillon 2 displays the time by means of two flame-blued steel hands moving over an off-centred sapphire sub-dial. A fine engraving on the wheel to the left of the dial enables one to read off the time on a 24-hour scale. Meanwhile, the seconds are indicated by a blue index that is actually part of the outer Tourbillon carriage. On the back, a hand integrated within the movement indicates the power reserve on a sector-shaped bridge. This timepiece, boasting a degree of precision on the wrist that
breaks entirely free of the power of gravity, illustrates
the creative strength that nurtures the countless transformations
of the Reverso, the watchmaking icon appearing in consistently reinvented and perpetually fascinating new forms of expression.

IWC
Da Vinci Per petual Calendar Digital Date-Month

The latest model in the Da Vinci collection is another milestone in haute horlogerie: its digital displays make not just every day, but every month too, into a significant event. Its flyback chronograph sets the standard.

In its tonneau-shaped case, the Da Vinci Perpetual Calendar Digital Date-Month continues the proud tradition of the calendar chronograph. Not with big letters but with big numerals, for the first time ever, an IWC timepiece is with a perpetual calendar that has a large format date display, and also turns the correct changing of the month into a large scale digital event on the dial.

The mode does not digitally display the time but rather the date and month of its mechanically programmed calendar – innovative, highly practical, clear and easy to read. This new model adds a major supplementary function to
the existing Da Vinci range. For in addition to the chronograph and also the perpetual calendar, it now has a large format date and month shown in digital form, plus a digital display of the four yearly leap year cycle.

The switching operations at the end of each month use up a lot of power. The IWC designers wanted to ensure that the IWC manufactured 89800 calibre movement would provide reliable switching over the whole power
reserve period without any perceptible loss of amplitude. Thus, for the watch, they designed an instantaneous jumping date indication to carry out this function. This is done by means of a separate mechanical power reserve: throughout the month, a tiny amount of the energy used to change the date each night is diverted and stored. This energy is discharged precisely when it is required: when, at the end of the month, the month disc has to be moved forwards in addition to the date. Through this clever
design the watch can now enter the digital age.