Chronometer limited edition Patek Philippe Advanced Research for several years now equipped with spiral balance Spiromax, made ​​from a material Silinvar. It does not require lubrication, does not react to temperature changes, is not affected by magnetic fields and corrosion. The use of a spiral balance ensures stability frequency vph and, ultimately, to improve the accuracy of the clock. Last year there was a spiral, for example, automatic Caliber 324 and a chronograph CH 28-520. But this company is small, she plans to transfer to silinvar all their new tools.

The birth site Oscillomax noted the presentation of a limited edition of 300 hours with the mechanisms of Caliber 240 Q Si. All three of these gauges are present and can be seen – through the sapphire cover automatic chronograph Ref. 5550P, who became the first receptacle for innovative site. Hours complicated perpetual calendar, power reserve of 70 hours.