We have well received your message on our website and thank you for the interest you show in Patek Philippe.
For your information, the Nautilus models ref. 5711/1A, 5726A, 5726/1A, 5980R & 5980/1A or 5980/1 in gold are water resistant up to 120m. The models ref. 5712 in gold, 5712/1A are water resistant up to 60m.
The water resistance is tested by air and by water and if it is mentioned 60m it means also 60 atmosphere(sic). If you swim normally with this kind of sporty watches, it is no problem, but we suggest you not to dive, nor to jump from a 3m to 10m from a spring or diving board, nor to water-ski. Moreover, the screw-down crown has to be completely fixed/screwed on its tube.
For more information, may we kindly suggest you to contact one of our official partners.
Sincerely yours,
PATEK PHILIPPE GENEVE SA
Chemin du Pont-du-Centenaire 141
CH - 1228 Plan-les-Ouates
tél.
+41 22 884 20 20
fax
+41 22 884 20 40
http://www.patek.com