The Patek Philippe Aquanaut collection was introduced in 1997 and ten years on it is still one of their most popular collections. Patek Philippe recently released the Ref 5167A Aquanaut along with some updated colors of the Aquanaut Luce Collection. The Ref 5167A Aquanaut is the largest Aquanaut ever made(40 millimeters across) and has a redesigned rubber strap.