Leonard & Church offers a 10-year limited warranty on the watch which covers manufacturing defects. The warranty does not cover damages that may occur from normal wear and tear and everyday use, nor does it cover normal expiration of a quartz battery (on average, between 2-4 years, though the length can be shorter or longer depending on usage). Despite water resistance features, Leonard & Church timepieces are not sports watches and should never be used while swimming or diving; water damage due to swimming or diving are not covered by our warranty. We are unable to replace individual components (e.g. crown) that may disassemble during normal wear and tear, and become lost. For more details, please see the instruction manual of your watch.