The newly bought Longines quartz watch is not calibrated, and it is in the middle of the two scales. What should I do?

Don't worry yet. I can tell you for sure that it is not the quality of your Tissot watch that is found right for the second time. Let me explain to you the reason for this phenomenon. Many friends choose to buy quartz watches because the timing accuracy of time is very high, but when they run, they find that the second hand is not calibrated on time, fearing that they have bought inferior products or even fake watches. Actually, this is a misunderstanding. First of all, whether the second hand of quartz watch can be aligned with the scale has nothing to do with the quality, which is a common problem of timely watches, even international watches are no exception. Excuse me, when you stretch out your wrist to see the time, do you look at the second hand, the hour hand and the minute hand first? Presumably, when you find that there is a big deviation between the hour hand and the minute hand, will you pay attention to whether the second hand is still moving? At that time, no one would worry about the wrong second. There are many reasons for this phenomenon. From the working principle, the engagement between the second hand and the minute hand is different from the engagement between the minute hand and the hour hand, which belongs to "dead engagement", that is to say, the positions of the minute hand wheel, the straddle wheel and the hour hand wheel are relatively fixed, and there will be no dislocation or movement under normal circumstances. The situation of the second wheel is different from that of the minute wheel, because the minute wheel will "slip" and it will appear as long as you dial the needle. In order to ensure the normal meshing and smooth transmission between gears, the modified cycloidal tooth profile is basically used. Gear teeth have meshing angle and meshing angle, and there must also be backlash, otherwise there will be tooth jacking or tooth scraping. The backlash of a pair of gears is very small, but it becomes several pairs of gears, and the backlash is superimposed together, which becomes obvious. It will pass through a small idle corner before the pointer behind it is pushed, which often happens after the pointer is set in a certain direction. The most typical is a two-needle quartz watch. If the minute hand indication is not good, it will always be half a minute late. In addition to the above operational reasons, there are also production and assembly factors. If the second hand has a fixed deviation on each scale, this is the problem of installation. If the second hand is aligned on one part of the scale and deviated on the other part, there is a tolerance in the manufacture of the watch dial. Once these factors are formed, it is useless to rely on manual adjustment. In the final analysis, it seems that there is no specific application significance to require the second hand of a watch to point to the scale completely and accurately, except for professional chronograph watches, but that requires extremely fine teeth and extremely high swing frequency, and must be able to stop the second. Only when the second hand stops can we observe and retrieve the numbers accurately. Whether the second hand of a high-priced or popular quartz watch is aligned with the scale is not the only criterion to judge whether it is qualified, because there is no relevant clause in the clock standards of major watch-making countries in the world that the second hand of a quartz watch must be aligned with the scale. Therefore, as users, we can only hope that major brand watch companies can install the second hand as close as possible to the center line of the scale. Of course, coincidence is the best. As long as the timing error of the watch is fixed, there is no need to demand whether the second hand points accurately. I hope the answer can help you dispel your doubts, and I hope you can choose it as a satisfactory answer.