Most Oris watches require a full service every three to five years because there is always a certain amount of abrasion in mechanical devices. Watches powered by Calibre 400 Series movements require servicing every 10 years. Our full service is a thorough and time-consuming process that involves completely dismantling, cleaning, lubricating and reassembling the movement. After servicing, every movement goes through a special series of tests, where it has to conform to stringent precision standards. This is the best way to ensure that your Oris watch will continue to run accurately for years to come. The work comes with a one-year guarantee. Please get in touch with the Oris Boutique or authorised Oris dealer where you purchased your watch, or your local service centre before sending your watch in for service.