Patek Philippe Calatrava Watch - 5227J-001 Railmaster At its core lies the

At its core lies the Rolex Calibre 3255

integrated black rubber strap

5 mm titanium case with anti-magnetic properties and helium escape valve

8 mm stainless steel case

white dial with a wave pattern made from 138 diamonds and sapphire hour markers

Patek Philippe Calatrava Watch - 5227J-001 Railmaster At its core lies the39 mm 18K yellow gold case, sapphire crystal back, ivory lacquered dial with gold applied hour markers, caliber 324 S C self winding movement with date in an aperture and center sweep second hand, approximately 35 45 hours of power reserve, shiny chocolate brown alligator strap with square scales. Water resistant to 30 m.