Patek Philippe celebrates the 20th birthday of the sporty & dynamic Aquanaut line that was first introduced in Basel 1997, by introducing several premiers among them is the Aquanaut Ref 5168G the first Aquanaut wristwatch in white gold. The design of the gently rounded octagonal bezel with vertically satin finished flats and chamfered polished flanks remains unchanged, moreover with a diameter of 42 mm it is the largest model in this line. The case accommodates the self –winding caliber 324 S C movement .merely 3.3 mm in height, the movement is so flat that even with its elaborate seals and gaskets, the complete watch is still only 8.25 mm thick overall. The Aquanaut collection celebrates another debut embedded in a prestigious “Patek Philippe Advanced Research Limited Editions” Family, this year it is the 500 watch edition of the Ref 5650 Aquanaut Travel Time with an innovative Spiromax balance spring made of Silinvar.