Patek Philippe Calatrava Ivory Dial 18kt Yellow Gold Brown Leather Mens Watch 5227J-001. 18kt yellow gold case with a brown leather strap. Fixed 18kt yellow gold bezel. Ivory dial with yellow gold-tone hands and index hour markers. Minute markers around the outer rim. Patek Philippe Calibre 324 S C automatic movement with about 35-45 hours of power reserve. Scratch resistant sapphire crystal. Sapphire crystal protected by an invisibly-hinged dust cover case back. Case size: 39 mm. Round case shape. Tang clasp. Water resistant at 30 meters / 100 feet. Functions: date, hour, minute, second. Item Variations: 5227J.