The Patek Philippe Nautilus (ref. 5726A-001) is a men's sports watch with a 40.5 mm octagonal case in stainless steel. It has a black and grey dial under sapphire crystal.
It is powered by a self-winding mechanical movement. Functions: Annual calendar, moon phases. Water-resistant to 60 m. The watch is fitted with a leather strap with a folding clasp in steel.
This example is brand new, and comes with the original box and papers.
