Patek Philippe gives fresh momentum to the emblematic Calatrava model featuring a guillochedhobnail pattern also known as Clous de Paris by treating it to a slightly larger diameter and a design reinterpreted in a contemporary spirit. The faceted applied white gold hour-markers, combined with dauphine-style hours/minutes hands, create a sleek and timeless dial aesthetic. The elegantly refined white gold case houses the new manually wound movement 30-255 PS with a 65-hour power reserve. WATCH Mechanical manually wound movement. Caliber30-255PS. Small seconds. DIAL Charcoal gray, vertical satin finish. Gold applied hour markers. CASE White gold. Bezel guillochedwith hobnail pattern. Sapphire crystal case back. Water-resistant to 30 m. Diameter: 39mm. Height: 8.08mm. STRAP Alligator leather with square scales, shiny black. Prong buckle.