Tudor Black Bay 54

Tudor's Black Bay 54, reference M79000B-0001, is a dive watch with a 37mm steel case. The case measures 11.2mm thick, with a 20mm lug width. A unidirectional rotating bezel in steel with an aluminium insert sits atop the case, paired with a screw-down crown. The blue dial is domed and carries luminous hands and indices, set under a domed sapphire crystal. Inside is the self-winding Manufacture Calibre MT5400, a chronometer with a power reserve of approximately 70 hours. The watch is fitted with a steel bracelet on a folding clasp. The screw-down crown helps hold the case to its 200 metre water resistance rating.