Also, The SafeDive procedure includes an outer case (on which the outer bezel is mounted) which lets the ingress and egress of h2o, and an interior circumstance, and that is chargeable for shielding the movement. The protrusion at 9:00 residences the coupling gear system linking the internal and outer bezels. https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/