Omega watches are one of the four famous Swiss watch brands, classified as Class 1, Grade 2 according to Swiss watch grading regulations. This is what we commonly refer to as a high-grade watch. These watches have higher standards in terms of part processing accuracy and component quality requirements. Their long-term stability is better than that of general mid-range watches, and their quality standards and inspection methods also have unique characteristics. Omega watches are products manufactured by the Omega factory under the Swiss Omega Group (SSIH Group). There are many product models, such as men's watches with series movement models like 320, 550, 563, 600, 1000, 1480, 710, 860, 1000, etc.; women's watches with series movement models like 620, 670, 1070, 625, 683, 1100, etc. These movement models basically adopt the traditional structure form of second spring type, with only minor changes in the transmission form of the minute wheel and the structure of the second spring to meet the design requirements of the movement. Since all the transmission structures are the same, there is no need to introduce each movement individually; it is sufficient to select representative movements for introduction. In this section, only the development overview, structural features, working performance, and repair precautions of three typical series movements from different periods - 550, 710, and 1000 - will be introduced.