Patek Philippe debuts a stunning wrist chronograph for short-time measurements

Patek Philippe decided to develop its first movement for a wrist chronograph that can measure and display tenths of a second. For this purpose, the engineers relied on one of the in-house movements that had been developed during the past twenty years. It was the caliber CH 29-535 PS launched in 2009; it reflects traditional architecture (manually wound, column-wheel control, horizontal wheel clutch) enhanced with six patented innovations and is complemented by its split-seconds version with two sweep chronograph hands

1/10th Second Monopusher Chronograph – Ref 5470P-001
Patek Philippe unveils its first wrist chronograph for tenths-of-a-second short-time measurements with a new, very precise high-performance movement. The frequency of the CH 29-535 PS caliber was increased from 4 to 5 Hz (36,000 vibrations per hour, or ten steps per second) and the movement was equipped with an additional chronograph mechanism exclusively dedicated to 1/10th of a second. In order to guarantee simple and fast reading of measured times, the movement developers devised a patented system of concentric seconds and fractions of a second indications. To meet the triple objective of efficiency, reliability and precision, the Manufacture has integrated its high-tech Oscillomax regulating organ, which features 17 patents. Seven additional patented innovations developed for this new CH 29-535 PS 1/10 caliber also contribute to reducing energy consumption, protecting the movement against shocks, and avoiding the risk of breakage in case of mishandling. This new small-series Grand Complication model is housed in a platinum case with hollowed and satin-brushed flanks. Its sporty touch is enhanced by details such as the 1/10th of a second hand in red-lacquered Silinvar and the calfskin leather strap with navy blue embossed fabric pattern and contrasting red stitching.