Patek Philippe Monopusher Chronograph 5470 has developed its first 1/10th second chronograph by heavily adapting one of the brand’s earliest fully in-house wristwatch chronograph movements. The new Ref 5470P Patek Philippe Monopusher Chronograph 5470 houses a reworked version of Patek’s CH 29-535 PS calibre from 2009, which now receives the ‘1/10’ suffix. The manually wound movement’s balance has been sped up from 4Hz to 5Hz (or 36,000 vibrations per hour) which allows for the 10 steps per second required for a 1/10th second chronograph.
A dedicated 1/10th second mechanism has also been added to allow for a unique method of displaying the chronograph’s measurements using two centrally mounted hands, the first indicating individual seconds, completing a rotation in 60 seconds, while the red hand sweeps around the dial in just 12 seconds and reads off a 120-sector railway track, allowing for a 1/10th second reading. The project – which was announced separately to its Watches and Wonders 2022 watches – has led to seven new patented innovations to reduce energy consumption, protect against shocks and guard against damage “in case of mishandling.”
The new platinum monopusher chronograph is also the only watch in Patek Philippe’s current collection to use its Oscillomax balance – originally developed in 2011 for its Advanced Research series. The 1/10th second hand is red-lacquered Silinvar, Patek’s own special recipe silicon used in the Oscillomax balance.
The Ref 5470P is available now via Patek Philippe Monopusher Chronograph 5470 , and is listed as price on request.