Tudor Black Bay 54, 37mm stainless steel case with polished and satin finish, black, domed, 60-minute unidirectional bezel in stainless steel with aluminium insert, manufacture calibre MT5400 (COSC) self-winding mechanical movement with bidirectional rotor system, rubber strap with Tudor “T-fit” clasp, domed sapphire crystal, waterproof to 200m (660 ft)