This movement has pretty lower good quality finishing. The hairpspring is mounted counter clockwise. Avoid this movement if possible. There exists also a no-day version of this movement called the SH3130 (or at times the AR3130) and that is of in the same way bad high quality. The DD4130 appears https://cocoagriculture83604.blogrelation.com/39334225/aaa-rolex-watches-secrets