Blancpain, Fifty Fathoms, model: 5054-1110-B52A Automatik satin brushed stainless steel, diameter 43mm, full set of unique design 43mm in diameter, with a satin brushed stainless steel case and a black ceramic unidirectional rotating bezel, water-resistant to 300 meters, it retains the tough genes of theFifty Fathoms series as a professional diving watch. The dial features a "meteor Grey" radial pattern design, equipped with hour markers and luminous coating to ensure clear time reading underwater. It is one of the few diving watches equipped with a full calendar and moon phase function: The day of the week and month are displayed at the 12 o 'clock position The outer circle numbers and the central pointer show the date At the 6 o 'clock position is Blancpain's classic moon phase display window The 9 o 'clock position also features a power reserve display (up to 72 hours). Equipped with Blancpain's self-produced 6654.P.4 automatic winding movement, with a frequency of 28,800 vibrations per hour and a power reserve of 72 hours, it ensures precise and stable timekeeping. Equipped with an anti-magnetic soft iron inner shell, it enhances the reliability of the movement in complex environments.