The Patek Philippe Nautilus Perpetual Calendar Ref. 5740 boasts a 40mm 18k white gold case that retains the iconic Nautilus design. Despite being a complicated model, the case remains remarkably slim at 8.4mm tall, a negligible increase over the time and date-only Ref. 5711. The case features sunken pushers for the perpetual calendar functions, keeping the sleek Nautilus silhouette intact. The sunburst blue dial features the Nautilus' signature horizontally-embossed texture but in a brighter shade compared to previous models. The trio of sub-dials at 3, 6, and 9 o'clock showcase the perpetual calendar functionality, highlighting the watch's impressive complexity.

Powering the Ref. 5740 is the automatic caliber 240 Q, a testament to Patek Philippe's pursuit of mechanical excellence. This ultra-thin movement, visible through the sapphire caseback, features Patek's renowned finishing and technical feats such as the Gyromax balance, Spiromax® balance spring, and a 22k gold micro-rotor. Despite its shorter-than-ideal 38-48 hour power reserve due to the perpetual calendar's needs, the 3.88mm tall caliber 240 Q is an impressive display of horological prowess, seamlessly integrating haute horology into the luxury sports watch design of the Nautilus.

The Patek Philippe Nautilus Perpetual Calendar Ref. 5740 has long been a favorite among watch enthusiasts and celebrities alike. Its timeless Nautilus design and impressive perpetual calendar functionality have made it a sought-after timepiece. Iconic figures such as Eric Clapton and Sylvester Stallone have been spotted donning the Ref. 5740, captivated by its blend of sporty elegance and horological complexity. Collectors and connoisseurs admire the watch's commitment to Patek Philippe's unparalleled craftsmanship, as showcased by the exquisite finishing and technical innovations of the ultra-thin caliber 240 Q movement visible through the sapphire caseback. The Ref. 5740's ability to seamlessly integrate haute horology into the beloved Nautilus silhouette has solidified its status as a true horological masterpiece, cherished by those who appreciate the pinnacle of Swiss watchmaking.