Mechanical watches are, due to their mechanical nature, never as accurate as a quartz or digital watch. This is part of the charm of the mechanism.
Nevertheless, every effort is made to make your watch as accurate as possible, and only small deviations of a few seconds per day are tolerated. It may happen that a new watch has to be adjusted after one year to adjust it to your specific use and living environment. If necessary, contact Holthinrichs Watches for servicing.