Because of the complexity of the mechanisms, it’s best to have a fine timepiece serviced by an authorized agent, equipped with genuine replacement parts and trained by the watch manufacturer. Upon request watch companies can provide a list of authorized service centers.

When setting the time, always turn the hands in a clock-wise direction. If you need to change the time, always set the day and/or date function during the day. The day-date mechanism is activated between the hours of 11 PM and 3 AM; adjusting the time during these hours can jam the mechanism. The day-date mechanism is activated between 9 PM and 12 AM in some watches.

For maximum efficiency and preservation of value, a fine mechanical watch, like an automobile, needs regular check-ups. A mechanical watch should be serviced every there to four years, depending on the manufacturer’s instruction.

A quartz watch should be serviced when a battery change is necessary. Only a qualified watchmaker should open and close the watch. Some warranties are in jeopardy if someone opens the watch other than an authorized person. NOTE: A quartz watch will not run if the crown is not completely in.

Automatic wind watches should be hand wound if not running or if they have been off the wrist and the mainspring has run down. This winding builds up power to get the timepiece running immediately. After this initial winding, the norma wrist action will wind the watch. Generally; after wearing a full day, an autowind should run for 36 to 48 hours.