Techniques are disclosed for operating a vehicle and a wearable device. Based on a wearable device being electrically connected through an interface unit of the vehicle, the vehicle is configured to provide, to the wearable device and through the interface unit, energy that charges a battery of the wearable device. A control unit of the vehicle is configured to connect to a mobile communication network through the wearable device, and receives, from the wearable device, information received by the wearable device through the mobile communication network. An output unit of the vehicle is configured to output the received information.