The Patek Philippe Aquanaut Luce Annual Calendar Ref. 5261R-001 is a sophisticated timepiece that seamlessly blends elegance with functionality. Encased in 18K rose gold, it features a blue-gray embossed dial with the signature Aquanaut pattern, complemented by gold applied numerals and a composite strap. This model introduces the patented Annual Calendar complication to the Aquanaut Luce collection, offering day, date, and month indications, along with a moon phase display. Powered by the self-winding Caliber 26-330 S QA LU movement, it boasts a power reserve of up to 45 hours. With a case diameter of 39.9 mm and water resistance up to 30 meters, this watch combines sporty chic aesthetics with practical features.