In 1999, it introduced the first models are equipped with a coaxial escapement system, watch, marked the birth of a new era mechanical watchmaking craft, which is in the past 250 years, the first practical new escapement.
The movement used by the coaxial escapement system and the non-card-degree hairspring balance wheel running together with the traditional folder with the speed of the escapement system has very different.
Embedded in a circular through the balance wheel on the two tiny gold adjustment screws to adjust to the moment of inertia, and then watch the travel time rate adjustment.
This design avoids the gossamer and the pace of folders in the contacts arising from the interference effects, thus ensuring a coaxial escapement system in the long-term use in the rate of stability.