Abstract: An electronic device and a system including the same are disclosed. An electronic device of the present invention includes: a body; a plurality of supports each of which is coupled to the body through one side thereof; and a holder configured to connect other sides of the plurality of supports having a curved portion corresponding to the shape of the ear of a user and fitted in the ear of the user, wherein at least one of the plurality of supports rotates on the body, wherein the radius of the holder is changed according to rotation of the at least one of the plurality of supports. According to the present invention, the supports coupled to the body rotate to be fixed to the user's ear.

Abstract: A mobile terminal includes a main body case, a user input unit configured to detect an input of a control command in a manner that one side of the user input unit is arranged to a side of the main body case and a controller configured to control according to the control command detected by the user input unit. The user input unit includes a rotatable input unit housing combined with the side of the main body case, a rotation detection unit configured to detect a rotation of the input unit housing and deliver a rotation input to the controller and a camera module mounted on the input unit housing. The mobile terminal can expand an input function using a stem button.

Abstract: An electronic device and a system including the same are disclosed. An electronic device of the present invention includes: a body; a plurality of supports each of which is coupled to the body through one side thereof; and a holder configured to connect other sides of the plurality of supports having a curved portion corresponding to the shape of the ear of a user and fitted in the ear of the user, wherein at least one of the plurality of supports rotates on the body, wherein the radius of the holder is changed according to rotation of the at least one of the plurality of supports. According to the present invention, the supports coupled to the body rotate to be fixed to the user's ear.

Abstract: A mobile terminal includes a main body case, a user input unit configured to detect an input of a control command in a manner that one side of the user input unit is arranged to a side of the main body case and a controller configured to control according to the control command detected by the user input unit. The user input unit includes a rotatable input unit housing combined with the side of the main body case, a rotation detection unit configured to detect a rotation of the input unit housing and deliver a rotation input to the controller and a camera module mounted on the input unit housing. The mobile terminal can expand an input function using a stem button.