Furthermore, The SafeDive procedure entails an outer scenario (on which the outer bezel is mounted) which lets the ingress and egress of h2o, and an internal scenario, and that is chargeable for preserving the movement. The protrusion at 9:00 properties the coupling equipment mechanism linking the internal and outer bezels. https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/