For the most part the novel caliber 29-535 follows the steps its famous predecessor caliber 27-70.
The calibers differentiate, however, in terms of their dimensions. The novel caliber boasts a diameter of 29 mm: that is 2 mm larger than that of the caliber 27-70. The caliber 29-535, composed of 269 individual elements, turns the top-quality chronograph into a perfect watch to be exposed on a woman’s wrist. The exceptional movement of this timepiece offers a respectable 65-hour power reserve in case the chronograph is running and this value is extended to 70 hours if the timer is not activated.
The caliber is particularly noteworthy for the asymmetric tooth profile of the chronograph’s clutch mechanism. This very element assures both the lengthy power reserve as well as much smoother running of the sweep seconds hand. Equipped with a vertical clutch, the acclaimed Caliber 27-70 movement is running at 18,000 vibrations per hour. Whereas the innovative movement fitted with a more conventional horizontal clutch pulses at 28,800 vibrations per hour. The premium caliber 29-535, created and unveiled by Patek Philippe, fully complies with the requirements, stipulated by the Geneva Seal.
As Watches.InfoNIAC.com found out, strongly motivated by the sweeping success of the Twenty-4 model, which was originally conceived as a quartz watch, Thierry Stern, the president of Patek Philippe, expressed a wish to continue to release classic mechanical masterpieces intended for ladies.
With its every detail, developed and manufactured to meet women’s particular needs, the innovative Patek Philippe Ladies First Chronograph is everything a true lady can anticipate. According to Mr. Stern, in 2010, this model will be issued as a limited series of no more than 700 pieces.