Nautilus Annual Calendar Steel Black Dial 40mm

The Patek Philippe Nautilus Annual Calendar ref. 5726A-001 combines the brand’s hallmark elegance with advanced functionality. Introduced in 2010, this model features a 40.5mm stainless steel case defined by the Nautilus collection’s signature rounded-octagonal bezel and integrated bracelet, blending refined design with robust wearability. The black horizontally embossed dial displays day, date, and month apertures across the top, accompanied by a moonphase and 24-hour indicator at 6 o’clock. White gold applied hour markers and luminescent hands ensure excellent legibility in all conditions. Inside, the self-winding Calibre 324 S QA LU 24H/303 powers the watch, offering a 45-hour power reserve. The annual calendar function automatically adjusts for months with 30 or 31 days, requiring manual correction only once per year. Fitted with a stainless steel bracelet and folding clasp, the Nautilus Annual Calendar ref. 5726A-001 delivers both comfort and enduring sophistication. Water-resistant to 120 meters, it exemplifies Patek Philippe’s ability to merge contemporary practicality with the timeless craftsmanship that defines the Nautilus collection.