CH 29-535 PS Q

About the Patek Philippe CH 29-535 PS Q

It builds the perpetual calendar onto the CH 29-535 PS, the hand-wound column-wheel chronograph of 2009 whose six patented innovations include an instantaneous 30-minute counter and a chronograph wheel with optimised teeth; the whole movement has 456 parts, 33 jewels, a 65-hour reserve and a beat of 28,800 vph at 32 mm across and 7 mm high, and carries the Patek Philippe Seal. It replaced the Lemania-based CH 27-70 Q, which had powered the 3970 and 5970 since 1986.

In the library it powers 19 Grand Complications: the 5270 in white gold, rose gold and platinum and the 5271 with a baguette-set case. 2 are limited editions.

The CH 29-535 PS is the chronograph alone in the 5170 and 5172, and the glossary defines the perpetual calendar.