Lucky error of watches, covering precision error and position error.Because affected by the earth's gravity, watches in different position of initiation of lucky error is different also, this is a difference.Watches only one ordinary position when static, watches the lucky error more secure, and wear when its position is protean, the initiation of lucky error is also changing.Mechanical watches, high-grade after growth parts precision and frequency theory, try to reduce a bad influence on the luck of the precision.After watch into the water, balance spring pendulum theory on water; At this time we should understand the cause of the watch is going faster, so need to go to the front degaussing or cleaning, protection and nurse hair spring.