A system, comprising a watch-type mobile terminal and an external device, wherein the external device is a display device (300_1), and the watch-type mobile terminal is configured to control a plurality of events occurring in the external device and comprises: a wireless communication unit configured to receive information related to an occurrence time of a first event of the plurality of events from the external device; a display unit configured to display a clock screen; a controller configured to display a first item identifying the first event at a position corresponding to the occurrence time on the clock screen based on the received information related to the occurrence time of the first event, receive a request for adjusting the occurrence time of the first event based on the displayed first item, move and display the first item to and at a position corresponding to adjusted occurrence time on the clock screen in response to the received request, and transmit the received request for adjusting the occurrence time of the first event to the external device, and wherein the controller is further configured to, when a distance between the watch-type mobile terminal and the display device (300_1) is greater than a reference distance and use of the display device (300_1) is sensec by the display device (300_1): receive a notification indicating use of the display device (300_1) from the display device (300_1), display the received notification indicating use of the display device (300_1) on the display unit, receive a wait screen change command or a use history storage command based on the displayed notification indicating use of the display device (300_1), and transmit the received wait screen change command or the use history storage command, respectively, to the display device (300_1), wherein the wait screen change command is a command for performing control to change a screen of the display device (300_1) to a wait screen, the change of the screen of the display device (300_1) to the wait screen being a second event of the plurality of events, and wherein the use history storage command is a command for performing control to store the use history of the display device (300_1), the storing of the use history of the display device (300_1) being a third event of the plurality of events. a wireless communication unit configured to receive information related to an occurrence time of a first event of the plurality of events from the external device; a display unit configured to display a clock screen; a controller configured to display a first item identifying the first event at a position corresponding to the occurrence time on the clock screen based on the received information related to the occurrence time of the first event, receive a request for adjusting the occurrence time of the first event based on the displayed first item, move and display the first item to and at a position corresponding to adjusted occurrence time on the clock screen in response to the received request, and transmit the received request for adjusting the occurrence time of the first event to the external device, and wherein the controller is further configured to, when a distance between the watch-type mobile terminal and the display device (300_1) is greater than a reference distance and use of the display device (300_1) is sensec by the display device (300_1): receive a notification indicating use of the display device (300_1) from the display device (300_1), display the received notification indicating use of the display device (300_1) on the display unit, receive a wait screen change command or a use history storage command based on the displayed notification indicating use of the display device (300_1), and transmit the received wait screen change command or the use history storage command, respectively, to the display device (300_1), wherein the wait screen change command is a command for performing control to change a screen of the display device (300_1) to a wait screen, the change of the screen of the display device (300_1) to the wait screen being a second event of the plurality of events, and wherein the use history storage command is a command for performing control to store the use history of the display device (300_1), the storing of the use history of the display device (300_1) being a third event receive a notification indicating use of the display device (300_1) from the display device (300_1), display the received notification indicating use of the display device (300_1) on the display unit, receive a wait screen change command or a use history storage command based on the displayed notification indicating use of the display device (300_1), and transmit the received wait screen change command or the use history storage command, respectively, to the display device (300_1), wherein the wait screen change command is a command for performing control to change a screen of the display device (300_1) to a wait screen, the change of the screen of the display device (300_1) to the wait screen being a second event of the plurality of events, and wherein the use history storage command is a command for performing control to store the use history of the display device (300_1), the storing of the use history of the display device (300_1) being a third event of the plurality of events.