The Patek Philippe Calatrava Pilot Collection Celebrates a Decade of Development

The following year saw another unexpected addition to the Calatrava Pilot series – a smaller-sized Calatrava Pilot Travel Time Ref. 7234R-001 in rose gold and sized at just 37.5mm in diameter. The watch offered a more refined take on the field or pilot’s watch by introducing a sunburst finish brown dial with a black gradient rim that is characteristic of Patek Philippe today. The smaller case size was also atypical of pilot’s watch models, but even though the Ref. 7234R-001 was quite a bit smaller than the Ref. 5524G-001, it provided the same Travel Time functions as its predecessor. For clients with slimmer wrists or who simply preferred a smaller-sized watch, the Ref. 7234R-001 was an excellent alternative to the original.

Anyone who is familiar with Patek Philippe will be aware of their skill in developing chiming complications. In 2019, the watchmaker unveiled the Ref. 5520P-001 Calatrava Pilot Alarm Travel Time, a development that brings together the utility-driven Travel Time complication with a practical chiming function. The watch added an alarm function to the Travel Time with a digital display for the alarm at 12 o’clock, with the option to switch it off, following the local time. The alarm can be set in 15-minute intervals, and to the next quarter, activating when the local time matches with the preset alarm. The 35-second long alarm uses a single gong and hammer to produce the alert, with a governor to regulate the pace of striking at a rather large volume. As a result, the Ref. 5520’s alarm chimes sound just like that of Patek Philippe’s minute repeaters, and is inspected similarly.

The Ref. 5520P-001 has been discontinued as of 2025, but it has a handsome successor in the Ref. 5520RG-001 which uses a mix of white and rose gold in the case. The bicolour case concept using two gold materials first appeared in 2010 on a Nautilus model as Ref. 5712GR-001 and has since been used on several Grand Complication models (the primary case material is represented first in the reference’s suffix). With Ref. 5520RG-001, rose gold is the primary material. The sunburst grey dial and charcoal grey hands and appliques bridges the warmth of rose gold and coolness of white gold, softening the contrast between the two materials and presenting a neutral, unisex overall look that appears less sombre than its platinum predecessor.

The Caliber CH 28-520 is an in-house manufacture movement with column wheel control for the chronograph operations and vertically coupling of the chronograph and timekeeping going trains. This offers minimal impact to the amplitude of the balance and frictionless coupling, both of which are factors driving accurate time-telling. As the dial is already packed with information, <a href=”https://www.cortinawatch.com/th/en/patek-philippe/”>Patek Philippe</a> has dropped the running seconds hand from the dial; instead, if this is needed, the wearer can instead keep the chronograph running non-stop and use the chronograph seconds hand as a functional substitute. A full 60-minute totaliser for the elapsed minutes is presented at the lower half of the dial while the upper displays the date. In between the two are apertures that indicate day and night time for local and home time zones.

In daytime, the Ref. 5524G-010 stands out among its siblings with a military- or safari-inspired colour palette. With a khaki green composite strap with fabric pattern and off-white dial, it emphasises ruggedness and the explorer’s spirit. Over the decade, this is a design evolution that is taking off in the Calatrava Pilot line. In the new year, this will hopefully bring new references to the collection.