An electronic apparatus comprising: a transceiver configured to obtain time information related to an operation of an external device; at least one processor configured to generate a clock graphical user interface, GUI, displaying the time information related to the operation of the external device; and a display for displaying the clock GUI, wherein the clock GUI comprises an indication area and an indication object moving on the indication area, and wherein the indication object rotates with respect to a center point included in the indication area and indicates the time information related to the operation of the external device, wherein the at least one processor is further configured to: control the display to display the indication object indicating a first area corresponding to the time information from among a plurality of partial areas included in the indication area, change the time information related to the operation of the external device, based on a user input of moving the indication object by a predetermined distance from the first area, control the transceiver to transmit the changed time information to the external device, and control the display to display the indication object indicating a second area moved by the predetermined distance from the first area in the indication area, and wherein the second area corresponds to the changed time information. a transceiver configured to obtain time information related to an operation of an external device; at least one processor configured to generate a clock graphical user interface, GUI, displaying the time information related to the operation of the external device; and a display for displaying the clock GUI, wherein the clock GUI comprises an indication area and an indication object moving on the indication area, and wherein the indication object rotates with respect to a center point included in the indication area and indicates the time information related to the operation of the external device, wherein the at least one processor is further configured to: control the display to display the indication object indicating a first area corresponding to the time information from among a plurality of partial areas included in the indication area, change the time information related to the operation of the external device, based on a user input of moving the indication object by a predetermined distance from the first area, control the transceiver to transmit the changed time information to the external device, and control the display to display the indication object indicating a second area moved by the predetermined distance from the first area in the indication area, and wherein the second area corresponds to the changed time information. control the display to display the indication object indicating a first area corresponding to the time information from among a plurality of partial areas included in the indication area, change the time information related to the operation of the external device, based on a user input of moving the indication object by a predetermined distance from the first area, control the transceiver to transmit the changed time information to the external device, and control the display to display the indication object indicating a second area moved by the predetermined distance from the first area in the indication area, and wherein the second area corresponds to the changed time information.