Men's wristwatch, model Calatrava Series. Patek Philippe Calibre 30-255 PS hand-wound mechanical movement with a 65-hour power reserve. Round case crafted from 18kt white gold measuring 39 mm diameter and 8.08 mm thick. Fixed bezel also made of 18kt white gold. Grey dial features silver-tone hands, applied index hour markers, minute markers along the outer rim visible through a transparent sapphire crystal. Scratch-resistant sapphire crystal construction. Screw-down winding/crown. Transparent case back allowing visibility of the movement. Equipped with a black alligator leather strap fitted with a tang clasp made of 18kt white gold. Swiss Made label on dial or box. Dress watch style, water resistant to 30 meters / 100 feet.