Patek Philippe Nautilus 5980/1AR-001. 40.5mm Rose Gold and Steel Case which is water resistant to 120 meters, screw down crown. Mechanical self winding movement PP Caliber CH 28-520 C. Chronograph with 60 minute and 12 hour mono-counter. Blue gradient dial with gold applied hour markers with luminescent coating. Steel and gold bracelet with Nautilus fold over clasp. Sapphire crystal case back. Box and papers..