
Pieter, known as techniec on WatchProSite, shares an exquisite view of his Patek Philippe 5170R's CH 29-535 PS movement. This post offers a prime opportunity to appreciate the intricate finishing and technical prowess of Patek Philippe's in-house chronograph caliber, inviting fellow collectors to delve into its horological significance. His detailed photography allows for a closer examination of a movement celebrated for its aesthetic and mechanical excellence.

The Chronograph reference 5170, introduced in 2010, marked a significant development for Patek Philippe as it was the first serially produced chronograph to feature a fully in-house manufactured movement. This reference succeeded the reference 5070, transitioning from a Lemania-based caliber to a proprietary design, underscoring the brand's commitment to integrated manufacturing for its complications. It represents a modern interpretation of a classic chronograph layout within the Patek Philippe catalog.
The reference 5170 features a case measuring 39.4 mm in diameter and 10.9 mm in thickness, available in 18k white, rose, or yellow gold. It is equipped with the manual-winding caliber CH 29-535 PS, which offers a power reserve of 65 hours. The watch is fitted with a sapphire crystal and is water-resistant to 30 meters. The movement is visible through a sapphire case back, showcasing its intricate finishing.
This reference appeals to collectors seeking a contemporary Patek Philippe chronograph with an in-house movement. Early variants, such as the yellow gold reference 5170J-001, featured a pulsometer scale, which was later replaced by a minute track on subsequent iterations. The various metal options and dial configurations provide distinct aesthetic choices for collectors, reflecting different periods of its production run.
Especially Iphone 17 Pro (max) and Samsung Galaxy S25 Ultra
Together with the Datograph, this is by far the best finished movement in my collection (until I finally get my hands on a 5370P, but that might take a while )
Best, Emmanuel
This thread is active on the Patek Philippe forum with 15 replies. Share your knowledge with fellow collectors.
Join the Discussion →