Steel Patek Philippe Nautilus 5726A-001. Water resistant to 120 metres. Case diameter 40.5mm. Patek Philippe 324 S QA LU 24H self winding movement, 28,800vph, 34 jewels, 347 parts and a power reserve of 35 – 45 hours. Functions: Hours, Minutes, Centre Seconds, Moonphase, Day, Date, Month. Black dial with index hour markers. Calendar: Day and month via apertures at 12, Moonphase and Date at 6. Black Croc leather strap with steel folding clasp. See through sapphire case back. Comes with additional black rubber strap. Box and papers. Our reference S21049.