Provided is an electronic device. The electronic device according to the present disclosure can adjust the length of a band surrounding a user's head, by sensing pressure of a part of the electronic device coming into contact with the user. Furthermore, the electronic device according to the invention can identify a direction in which the user's eyeball looks, and deduce the user's facial expression, by sensing the movement of muscle around the user's eyeball. The electronic device of the invention can be associated with artificial intelligence modules, robots, augmented reality (AR) devices, virtual reality (VR) devices, devices related to 5G service, etc.