5980/1AR-001 Patek Philippe. This watch has mechanical self-winding movement with date. Caliber CH 28-520 C with chronograph. 60-minute and 12-hour monocounter at 6 o’clock. Sweep seconds (chronograph hand). Dial: blue gradient, gold applied hour markers with luminescent coating. Steel/gold bracelet with Nautilus fold-over clasp. Screw-down crown. Sapphire-crystal case back. Water resistant to 120 m. Steel/rose gold case diameter (10-4 o'clock): 40.5 mm 5980/1AR-001 Patek Philippe Stainless Steel and 18K Rose Gold Watch.