Furthermore, The SafeDive system will involve an outer circumstance (on which the outer bezel is mounted) which permits the ingress and egress of h2o, and an interior situation, which is chargeable for shielding the movement. The protrusion at 9:00 houses the coupling equipment mechanism linking the interior and outer bezels. https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/