All fine timepieces require routine maintenance and servicing. Most overhauls last 3 to 4 years simply due to the longevity of the oils used for lubrication inside the movement. When the oil lubricants begin to dry up the moving parts of the mechanisms begin to produce friction, which cause the parts to breakdown, affecting the accuracy of the watch. If your mechanical watch is running more than 2 to 3 minutes fast or slow it may be time for an overhaul. Make sure your watchmaker:
-Completely disassembles the watch in order to clean, oil, and time, using state of the art equipment
-Cleans all moving parts with specialized cleaning solvents. Properly lubricates with only the highest-grade lubricants and oils .
-Tests for accuracy. Your watch should be tested with perfect timing over period of 72 hours to assure accuracy, water resistance, and proper operation of all functionality.

Maintenance of a fine timepiece will ensure the integrity and precision intended for watch.