The chronograph version of the Aquanaut
This white gold Aquanaut with its midnight blue dial and strap stands out for its self-winding flyback chronograph: a complication perfectly in keeping with the spirit of this sporty, dynamic line. The 60-minute counter at 6 o’clock echoes the rounded octagonal shape of the bezel, while the patented fold-over clasp is secured by four independent catches.
| Category | Details | 
|---|---|
| Dial | Sunburst blue with black-gradient rim, embossed Aquanaut pattern. White gold applied numerals with white luminescent coating. White gold baton-style hands with white luminescent coating. | 
| Case | Material: White gold Diameter (10–4 o’clock): 42.2 mm Thickness: 11.9 mm Water resistance: 30 m Screw-down crown Sapphire crystal case back | 
| Strap | Composite material, midnight blue White gold patented fold-over clasp | 
| Movement | Caliber: CH 28-520 C Self-winding Flyback chronograph Central chronograph hand 60-minute counter Date display in an aperture | 
| Movement Specs | Diameter: 30 mm Thickness: 6.63 mm Number of parts: 308 Number of jewels: 32 Power reserve: 45–55 hours | 
| Special Features | 21K gold central rotor Gyromax® balance Frequency: 28,800 vibrations/hour (4 Hz) Spiromax® balance spring Patek Philippe Seal | 
