A wearable watch-type mobile terminal, comprising: a terminal body; a sensor unit located at the terminal body and including: a light emitting portion for emitting light; and a light receiving portion for sensing reflected light; and a controller configured to: cause the light emitting portion to emit light of first intensity at first time intervals; cause the light emitting portion to emit light of second intensity at second time intervals occurring between the first time intervals; calculate a pressure value of a touch applied to the terminal body based on an amount of light incident on the light receiving portion; and generate a specific control command based on the pressure value; characterised in that the controller is further configured to determine whether the watch-type mobile terminal is worn on a user's wrist or user's body based on the light of said first intensity reflected by the user's skin (A, B, C) and sensed by said light receiving portion. a terminal body; a sensor unit located at the terminal body and including: a light emitting portion for emitting light; and a light receiving portion for sensing reflected light; and a controller configured to: cause the light emitting portion to emit light of first intensity at first time intervals; cause the light emitting portion to emit light of second intensity at second time intervals occurring between the first time intervals; calculate a pressure value of a touch applied to the terminal body based on an amount of light incident on the light receiving portion; and generate a specific control command based on the pressure value; characterised in that the controller is further configured to determine whether the watch-type mobile terminal is worn on a user's wrist or user's body based on the light of said first intensity reflected by the user's skin (A, B, C) and sensed by said light receiving portion. a light emitting portion for emitting light; and a light receiving portion for sensing reflected light; and a controller configured to: cause the light emitting portion to emit light of first intensity at first time intervals; cause the light emitting portion to emit light of second intensity at second time intervals occurring between the first time intervals; calculate a pressure value of a touch applied to the terminal body based on an amount of light incident on the light receiving portion; and generate a specific control command based on the pressure value; characterised in that the controller is further configured to determine whether the watch-type mobile terminal is worn on a user's wrist or user's body based on the light of said first intensity reflected by the user's skin (A, B, C) and sensed by said light receiving portion. cause the light emitting portion to emit light of first intensity at first time intervals; cause the light emitting portion to emit light of second intensity at second time intervals occurring between the first time intervals; calculate a pressure value of a touch applied to the terminal body based on an amount of light incident on the light receiving portion; and generate a specific control command based on the pressure value; characterised in that the controller is further configured to determine whether the watch-type mobile terminal is worn on a user's wrist or user's body based on the light of said first intensity reflected by the user's skin (A, B, C) and sensed by said light receiving portion.