Patek Philippe Modern Chronograph Collection

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.

Patek Philippe Reference 5204 Split-Seconds Chronograph Perpetual Calendar

The Reference 5204 combines split-seconds chronograph functionality with perpetual calendar complications in a 40mm case format. This reference represents Patek Philippe's approach to integrating dual chronograph timing capabilities with complete calendar functions, positioning it as a grand complication within the manufacture's lineup.

The 40mm case is available in 18k white gold or rose gold with polished bezel treatment and sapphire crystal. The manual-winding Caliber R CH 27 PS QI provides 48 hours of power reserve. Dial options include silvery-gray or silvery-opaline finishes, paired with alligator leather straps. Water resistance is rated to 30 meters.

Produced from 2012 to 2019, the 5204 appeals to collectors seeking complications beyond standard chronographs or simple perpetual calendars. The split-seconds function adds timing versatility while maintaining the traditional manual-winding operation characteristic of high-end chronograph manufacture. The reference serves collectors prioritizing mechanical complexity and dual precious metal case options.