According to one embodiment of the preset specification, a method for controlling a wearable device for displaying visual information on a first display area and on a second display area can comprises the steps of: detecting that the wearable device has been changed to a charging state; displaying first visual information on a first display area; displaying second visual information on a second display area; detecting an event relating to a first application while the wearable device is in a charging state; and displaying, on the second display area, third visual information relating to the first application. At this time, the first visual information of the first display area can be displayed on a display unit of the wearable device, and the second visual information of the second display area can be displayed on the basis of a light source projected outside of the wearable device.