Patek is 42 mm 18K white gold case, sapphire-crystal back, blue varnished dial with luminescent coated gold applied numerals, caliber 324 S F C FUS self-winding movement Calatrava Pilot Travel Time (dual time zone mechanism indicating local and home time, local and home day/night indication in apertures, local date by hand, center sweep second hand), approximately 35-45 hours of power reserve, vintage brown calf leather strap, clevis prong buckle. Water resistant to 60 m.