Tudor black bay 41, 41mm steel case with polished and satin finish, anthracite, stainless steel bezel with polished and satin finish, manufacture calibre MT5601 (COSC) self-winding mechanical movement with bidirectional rotor system, stainless steel bracelet, polished and satin finish, with Tudor “t-fit” folding clasp and safety catch, flat sapphire crystal, waterproof to 100m (330 ft)