German watch  The error range National error range of plus or minus 30 seconds per day. Please note that due to the needs of the mechanical watch itself, if the watch does not wear for a long time, it will stop the travel time, not the watch itself has failed. The so-called full- automatic mechanical watch when not in there will never cease to go, nor is it so long as you can provide power in the hands, you need to have your arm enough exercise, automatic Tuo sufficient rotation can provide power. In addition, the first use of German watches , please manually winding! The allowable error of the general mechanical watch is about 60 seconds per day, the specific error depends on the movement used by the watch. German watch manual there are expressly standard error, should be based on this; if there is no specific error criteria, it should be based on the national (China) standards. How to test the size of the German watch error The test method is very simple, the need to give the German watch first full winding, then a standard time aligned German watch was tested, minutes, seconds, so that they are synchronized, and then placed in the plane position for 24 hours after the real Compare the error with standard time and record it. Repeat the process in turn, respectively, under the surface of the German watch, put the next, the left, put the actual position on the error test, and recorded. For example: static test results, the surface +20 seconds / day, the surface +20 seconds / day, the next -5 seconds / day, the left +25 seconds / day, the right +10 seconds / day, the results The actual error when wearing a German watch is +15 seconds / day. What factors will increase the German watch error German watch error conditions, manual +/- 15 seconds (temperature level, the size of the magnetic field will affect the accuracy of travel time) is in a standard environment. If it is a German watch quartz watch (error within +/- 0.5 seconds) that is absolutely a problem. The error of the German watch is generally not stable, and occasionally big and normal one day. Daily use can still make some simple adjustments. It needs your attention. For example, the effect of temperature on German watches. Low temperature German watch walking fast, high temperature German watch walking slow. General German watch worn in the hands of walking slowly, get down and walk fast. The error of 30 seconds a day is a little bigger, but still within acceptable range. You buy the table without experience, pick the table should let the counter give you some error, measure the error of a few tables, choose a small error buy. German watches in different locations have different travel time accuracy. This is what we call the watch position error, the better German watch factory to be tested at three temperatures and five orientations, the five positions are: face (dial up), under the face, the next (3 Point down). It is unusual for the left (12 o'clock) and the upper (9 o'clock) to be to the right (down 6) (unless you bring the watch to the palm or the right hand). According to statistics, the majority of people in Germany in a day position on the surface of the use of time is about 35%, the left is 30%, the next is 25%, the other positions 10%, so the use of German watches in different locations go different Accuracy error, you can correct the trend of the German watch. Poly fashion watch network Recommended reading: Quartz watch is good or mechanical watch good ladies watch brand list the world's top ten watch brand watch list