Patek Philippe Nautilus “Blue Dial” Chronograph Steel
- Reference: 5980/1A-001
- Case: Stainless steel
- Diameter: 40.5 mm
- Thickness: Approximately 12.2 mm
- Water Resistance: 120 metres
- Dial: Gradient blue-to-black with horizontal embossing
- Movement: Calibre CH 28-520 C
- Functions:
- Flyback chronograph
- Central chronograph seconds
- Combined 60-minute/12-hour chronograph counter at 6 o’clock
- Date at 3 o’clock
- Power Reserve: 45–55 hours
- Bracelet: Integrated stainless steel bracelet with folding clasp













