The present disclosure relates to a multimedia device and a method for controlling the same. More specifically, the present disclosure may be applied to all of a 5G communication technology field, a robot technology field, an autonomous driving technology field, and an AI (Artificial Intelligence) technology field. An extended reality device including a camera, a display, a sensor for sensing a user action, and a controller that activates a power saving mode when a predetermined user action is detected using the sensor while a predetermined application is executed in a non-power saving mode is provided.