Patek Philippe · Family: Nautilus
The Patek Philippe Nautilus Perpetual Calendar 5740/1G-001 was, in 2018, the first Grand Complication in the Nautilus family: a white gold perpetual calendar that keeps the model's signature slimness thanks to the ultra-thin Caliber 240 Q. As of August 2026, Cazador has 0 verified price observations. Its differential trait: by running the same Caliber 240 Q used across other Patek perpetual calendars, it is the thinnest perpetual calendar the manufacture has ever built.
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The Nautilus was born in 1976, designed by Gérald Genta, as Patek Philippe's answer to the luxury steel sports watch with integrated bracelet, a category launched a few years earlier by Audemars Piguet's Royal Oak. For decades the line stayed focused on three-hand versions and the occasional chronograph, without major complications. That changed in 2018, when Patek Philippe introduced reference 5740, the first perpetual calendar in the Nautilus family.
The key to this reference is Caliber 240 Q, the same ultra-thin movement the manufacture uses across other perpetual calendars in its catalog, including the dressier 5327. At just 3.88mm thick and 27.5mm in diameter, the 240 Q lets the 5740 keep the Nautilus's signature slim profile — 8.42mm total case thickness — despite housing the mechanical complexity of a full perpetual calendar: day, date, month, and leap-year cycle, plus moon phases.
The 40mm octagonal white gold case retains the identity traits of Genta's original Nautilus: the bezel and bracelet with contrasting polished and satin finishes, and a corrector system designed specifically for this case. The sunburst blue dial, with horizontal embossing and pearlescent subdials, is completed with white gold applied luminescent indices.
With 30 meters of water resistance — a modest figure, consistent with its role as a sporty dress watch rather than a dive instrument — and a white gold bracelet with a patented fold-over clasp and lockable adjustment system, reference 5740/1G-001 remains, according to Patek Philippe's own official documentation, within the manufacture's current catalog.
We don't have verified price observations for this reference. We don't estimate or invent a range; this section will activate once enough market data exists.
It's an ultra-thin (3.88mm) self-winding movement that allows a full perpetual calendar to fit without thickening the case, making the 5740 the thinnest perpetual calendar Patek Philippe has ever built.
In 2018, with reference 5740, nearly 42 years after the Nautilus originally launched in 1976.
It shows day, date, month, and leap-year cycle — the full set that defines a perpetual calendar — plus moon phases, on a sunburst blue dial.
It's rated to 30 meters, enough for daily wear but low compared to other sportier Nautilus versions, in keeping with its role as a dressy complication.
Between a minimum of 38 hours and a maximum of 48 hours, according to Caliber 240 Q's official technical documentation.
It's the manufacture's own quality standard, which replaced the older Geneva Seal (Poinçon de Genève) in 2009, certifying both the finishing and the chronometric performance of the movement and case.