Furthermore, The SafeDive method consists of an outer circumstance (on which the outer bezel is mounted) which will allow the ingress and egress of h2o, and an inner circumstance, that's answerable for safeguarding the motion. The protrusion at 9:00 houses the coupling gear mechanism linking the internal and outer bezels. https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/