The Patek Philippe reference 5726 is one of the most versatile and technically accomplished models within the Nautilus collection, combining the iconic sports-luxury design with the manufacture's renowned Annual Calendar complication. Introduced in 2010, it features a beautifully balanced dial displaying the day, date and month through three apertures, complemented by a moon phase and 24-hour indicator. Powered by the automatic Calibre 324 S QA LU 24H/303, the 5726 offers the practicality of an Annual Calendar, requiring adjustment only once each year at the end of February. Available in stainless steel, rose gold and two-tone variations, with both bracelet and leather strap options, the reference has become one of the most sought-after complicated Nautilus models. It is admired for seamlessly combining everyday wearability, technical innovation and the unmistakable design language that has made the Nautilus one of the world's most iconic luxury sports watches.