Many people know that when Rolex watches are completed, they will first send the movement to the Swiss official observatory to obtain C.O.S.C. certification. However, what makes the brand special is that after they pass the movement inspection back to the factory, they will reinstall the case and retest it again to ensure that the watch’s travel time stability and accuracy have reached a satisfactory level before entering the factory. Commercially available.
In the past, Rolex did not disclose much details about the consistent low-key attitude of this internal inspection after COSC, but since 2015, the brand has announced the latest standard for this internal inspection, in addition to testing the watch’s water resistance and winding. In addition to items such as efficiency, storage capacity, and simulation of actual wearing conditions, the most important point is that the daily error value of all watches under test must be kept in the range of -2 + 2. In addition to the watch that passes the above test standards, there will be a green In addition to the seal verification, the original ‘SUPERLATIVE CHRONOMETER’ commonly used on Rolex watch faceplates has a more precise meaning than before. With the release of the new certification standard, Rolex also announced the extension of the warranty period In 5 years, we can see that the brand has high confidence in its own products.
The original ‘SUPERLATIVE CHRONOMETER’ on the Rolex watch face has a new meaning after adopting the new version of its own testing specifications in 2015. The most important thing is to raise the daily error interval to the level of ± 2 seconds.