TUDOR Black Bay Chrono Carbon M79377KN-000342mm black carbon composite case, White dial Case: 42mm black carbon composite case Bezel: Fixed carbon fiber bezel with tachymetric markings, all one piece Movement: Manufacture Caliber MT5813 (COSC) with chronograph function Self winding mechanical chronograph movement with bidirectional rotor system Dial: White dial with black counters, domed Winding Crown: PVD finished screw down winding crown with the TUDOR rose in relief. PVD finished titanium