Tudor Black Bay 54

The Tudor Black Bay 54, reference M79000B-0001, is a dive watch with a 37 mm steel case. The case is 11.2 mm thick and has a 20 mm lug width. A domed sapphire crystal covers the blue dial, which has applied hour markers. The movement is the self-winding Manufacture Calibre MT5400, a chronometer with a power reserve of approximately 70 hours. The bezel is a 60-minute unidirectional rotating bezel in steel with an aluminium insert. The Black Bay 54 also has a screw-down crown. Tudor rates the case to 200 metres. A steel bracelet with a steel folding clasp is fitted to the watch.