The Patek Philippe Grand Complications Retrograde Perpetual Calendar (ref. 6159G-001) is a men's sports watch with a 40.5 mm octagonal case in stainless steel. It has a blue dial under sapphire crystal.
It is powered by the self-winding mechanical calibre 26-330 S QR with a power reserve of 45 hours. Functions: 24-hour indication, day of the week, month, moon phases, date, retrograde date display, perpetual calendar. Water-resistant to 120 m. The watch is fitted with a Nautilus bracelet with a folding clasp in steel.
This example is brand new, and comes with the original box and papers.