The Patek Philippe 5905R-010 is a sophisticated timepiece that seamlessly combines a flyback chronograph with an annual calendar. Housed in a 42mm 18K rose gold case, it features a sunburst blue dial with gold applied faceted baton-style hour markers. The watch is powered by the self-winding mechanical movement Caliber CH 28-520 QA 24H, offering a power reserve of approximately 45 hours. It is water-resistant up to 30 meters and comes with a shiny dark blue alligator leather strap with a prong buckle.