What to do if the mechanical watch has errors The accuracy of the mechanical watch travel time is mainly determined by the stability of the balance spring vibration frequency, because the watch will be affected by many internal and external factors during use, such as: environment, temperature, wearer’s usage habits, watch The position of the watch, etc., the watchmaker can try to narrow the error range according to the situation of your watch, but it cannot be adjusted to no error. The allowable normal daily error of Swiss mechanical watches is ± 35 seconds / day. What problems should we pay attention to when wearing a watch Do not use the watch (including waterproof watches) in hot water baths, saunas, or in environments with large temperature changes Do not operate the buttons of the watch and adjust the crown in water. Please clean the strap / bracelet and case regularly. If it is a leather strap, please avoid contact with water / moisture / cosmetics, etc., and avoid exposure to sunlight.