Patek Philippe Aquanaut 5261

The Patek Philippe Aquanaut 5261R-001 is the first Annual Calendar model introduced into the Aquanaut collection, in 2023. It has a 39.9 mm octagonal case in rose gold with a sapphire crystal and water resistance to 30 meters. The blue dial is paired with a strap featuring an embossed Aquanaut motif, and the watch displays day, date, month, and moon phase, requiring one manual correction per year at the end of February. It is powered by the automatic Patek Philippe calibre 26-330 S QA LU, which provides 45 hours of power reserve.