Model aquanaut waterproof sport range from Patek, self-winding movement, caliber Patek Philippe 315 S C. This is the first jumbo reference from Patek Philippe ref 5065 A. And this first reference is still less expensive than the new one. The same phenomenum happened back then with the nautilus jumbo ref 3700. A real modern collector watch! This watch delivered with its original papers from 2005!