A mechanical watch is a beautiful piece of craftsmanship. Just like any other precision instrument that works 24/7, a watch needs to be checked periodically to ensure that it continues to work perfectly. It is impossible to say in advance how often you should have your watch checked. It depends on the model, the climate and how well you take care of your watch yourself. In general, a mechanical watch should be serviced every 6 to 8 years, depending on the circumstances in which the watch is worn.