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compared with other kinds of watches, mechanical watches have inherent advantages, but the unique charm of machinery itself is incomparable. the watch has been developed for more than 300 years, and its basic structure and principle have not changed much, which is also its mystery. of course, with the increasing level of technology, the movement is becoming more complex (such as double flywheel, three-dimensional flywheel, four escapement, liquid drive, etc.), and the material is becoming more and more diversified (such as carbon fiber, titanium, polymer aviation materials, etc.).