Breitling - Mechanical Chronograph Maintenance

Mechanical, Chronograph watches are designed to provide a lifetime of accurate and reliable service. For maximum efficiency and to prevent damage, a mechanical watch needs to be serviced every three or four years.
Many steps have to be performed to service a watch. First, the watch is opened and the movement is removed. It is taken apart, down to the very last screw. Then the parts are checked for wear and tear. The old parts are replaced when necessary. Then all the parts are cleaned, reassemble and lubricated. After those steps, then the movement is regulated, so the watch will run accordingly. Polishing the case and the bracelet.
If the watch is water resistant, the water tightness is checked. After performing all this steps, will get almost a brand new watch.