Provided is a wearable device including: a biological-signal sensing unit that senses a biological signal of a user; a vehicle-state sensing unit that senses a state where a vehicle that the user gets in is moved; and a controller that determines a parking mode and a parking direction using a result of the sensing by the vehicle-state sensing unit, when the vehicle is parked, and that measures a level of user tension for the parking mode and the parking direction that are determined using the biological signal that is sensed while the vehicle is being parked, in which the controller selects the parking mode and the parking direction that the user prefers, based on the measured level of user tension, and provides the user with information relating to a parking lot where the vehicle is able to be parked in the parking mode and the parking direction that are selected.