Product Manual 25 June 2021 12:47 Updated Even the finest products do not work perfectly if they are not used and looked after properly. That’s why we have produced an in-depth product manual with information on how to use every Oris model. Related articles How do Oris reference numbers work? Terminology behind watchmaking What is a reference number? How much does an Oris watch cost? How can I register my watch on MyOris?