Tudor Black Bay Black Dial Men 41mm M7941A1A0RU-0001

The TUDOR Black Bay Ceramic, Black Bay, Black Bay 58 GMT, and the Pelagos FXD GMT have undergone a series of rigorous tests in order to achieve the status of Master Chronometer, awarded by METAS. METAS Master Chronometer certification is comprehensive and covers the main functional characteristics of a watch including precision, resistance to magnetic fields, waterproofness and power reserve. Its standards are incredibly high, starting with precision. In order to qualify, a watch must be able to function within a 5-second range of variation each day (0 +5), that is to say 5 seconds less than the Official Swiss Chronometer Testing Institute (COSC) (-4 +6) carried out on a single movement and a second less than TUDOR's internal standard, which is applied to the brand's models with a Manufacture Calibre (-2 +4).