Embodiments of the present invention relates to a terminal device comprising a band and the headset, the band has a U-shaped band body, the first band end portion and a second band end located spaced apart across the band body includes a moiety, a; headset includes a headset main body, the headset body includes a first headset end portion and a second head set end portions of the; first band end portion, the rotary structure It is connected by using fixed to the first headset end portions; when the headset is used, second headset end portion of is rotated by the use of rotary structure as the center of the sphere ; when the headset is used, the band is used as an ear hook; when the headset is not used, the headset and bands together form a closed ring. Terminal devices provided in the present invention is useful for portable by a user.