Watch equipped with a device for locking an external control unit

A watch comprising:

• a horological movement;
• and
• a case incorporating the horological movement and provided with a control member allowing to activate a function of the horological movement, the control member being movable in a radial direction and configured to be actuated by a user from outside the case, the case being further provided with a locking device for locking the control member, the locking device comprising a locking member which is rotatably mounted about a central axis of the case and which is arranged so as to be able to be actuated by the user of the watch between at least one angular locking position,
• wherein the control member is stopped or blocked by the locking device so that said function cannot be activated by actuation of the control member in said radial direction, and at least one angular unlocking position wherein the control member is released and can be actuated in said radial direction so as to allow said function to be activated, and
• wherein the watch further comprises a bezel rotating about said central axis, the rotating bezel and the locking member thus being coaxial, the rotating bezel and the locking member being arranged so as to be rotatably actuated by the user independently of each other.