These generic crystals are made to fit many of the highly popular PATEK PHILIPPE® brand watches. This makes them an easy repair when you break your crystal and want to replace the part without having to send the watch in to the service center, saving shipping and insurance costs. These are generic made to fit and not to be confused with genuine PATEK PHILIPPE® crystals. With a wide range of generic PATEK PHILIPPE® crystals to choose from you should be able to find one to fit your watch. Made of Sapphire glass. These crystals are available in Domed and Rectangular shape. Sold individually.