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