This Audemars Piguet Royal Oak is made of and has a 37mm case size. The watch is pre-owned and has been professionally serviced inside and out to Audemars Piguet quality standards and comes with an original Audemars Piguet box. This watch has been customized by Icebox and does not come with the manufacturer's warranty. In place of the manufacturer's warranty, we offer a 12-month Icebox warranty. Icebox is not an authorized Audemars Piguet dealer.