Patek Philippe has launched the self-winding Calatrava Pilot Travel Time in the new medium format (37.5 mm) that assures a subtle presence on the wrist. The blue dial was optimized with luminous applied numerals in white gold. The case is designed in white gold and has a sapphire-crystal case back. This beautiful timepiece comes on a calfskin navy blue (original fitting) strap with a clevis prong buckle.