The time accuracy of IWC mechanical watches cannot be achieved or maintained through calibration. why would you said this? Because the travel time of a mechanical fake watches constantly changing, it can maintain temporary travel time accuracy under a spring tension, fixed position, and temperature environment, but if these conditions are changed, the travel time accuracy will also have a certain degree Variety. That is to say, even if the watch is calibrated to be the same for one second, it will not be maintained, and the accuracy will always change in instants and fluctuations. Moreover, there are many other factors that affect the accuracy of the watch. The error of the watch we see is only the average error between actual running and unit time.
Usually we think that the accuracy of the watch is best when the mainspring is fully wound. So if you want to make your watch accurate, you must fill the mainspring as much as possible, which is even more important for automatic watches. Because the degree of tightness of the clockwork of an automatic watch is directly related to the wearing time and wearing movement, the premise is that there must be a sufficient amount of exercise.
IWC watches have different timekeeping accuracy in different positions. This is the so-called position error of the watch. Better watches should be tested at three temperatures and five positions when they leave the factory. The five positions are: face (dial up), face down, and down (3 o'clock). , Left (down at 12 o'clock), up (down at 9 o'clock), only the right position (down at 6 o'clock) is not commonly used (unless you bring the watch to the palm of your hand or your right hand). According to statistics, most people use about 35% of the time on the replica watches face in one day, 30% for the left, 25% for the lower, and 10% for other positions. Therefore, using the different accuracy errors of the watch in different positions, you can Correct the trend of the watch's speed.
Do an observation test first, and then record it. The test method is very simple. First wind the watch fully, and then use a standard time to align the hours, minutes, and seconds of the watch under test, and let them synchronize. First place it on a flat surface and walk for 24 hours, then compare it with the standard time. Error and record it. Repeat the above process in turn to test the actual running error of the watch's lower, lower, left, and upper positions, and record them. For example: the static test results are: face +20 seconds/day, face down +20 seconds/day, turn down -5 seconds/day, turn left +25 seconds/day, turn up +10 seconds/day, then The actual wearing time error of the watch is +15 seconds/day.