Authentic Tudor Black Bay 41 model M7941A1A0NU-0003. Automatic Chronometer movement Calibre MT5602-U with 70 hour power reserve, Polished Stainless Steel case and bracelet with Folding clasp, Unidirectional Rotating Black Aluminum Insert bezel on a Black Dial displaying Luminous Silver Tone Circle/Stick Hour Markers and Minute markers around the outer rim. Features include Hour/Minute/Second display, Scratch Resistant Sapphire crystal, Round shape 41mm size 13.6mm thick, Solid case back with Screw Down crown. Rated at 200 meters or 660 feet water resistance.