The Black Bay Ceramic, with a case diameter of 41mm, is the first watch from Tudor to be certified by the Swiss Federal Institute of Metrology in Bern (METAS). METAS certification requires that the watch in question is manufactured in Switzerland and COSC-certified, and also passes a number of additional tests. These include testing the watch for precision in 6 positions and in two levels of power reserve (100% and 33%), as well as water resistance, the length of the power reserve and, above all, resistance to magnetic fields. The new Black Bay Ceramic is resistant to magnetic fields up to at least 15,000 gauss, which basically makes it completely resistant to magnetism in daily life.
The screw-down crown and unidirectional rotating bezel is made of PVD-coated steel. The watch comes with a complementary black fabric strap with cream centre line and black PVD-coated 316L steel buckle. Inside the ceramic case beats the manufacture calibre MT5602-1U, which is visible due to the transparent case back.