Ear wearable type wireless device and system supporting the same

An electronic device includes a housing including a portion removably mounted on one of the ears of a user, a wireless communication circuit included in the housing, a battery included in the housing, A speaker included in the housing and positioned to face the eardrum of the user when the portion of the housing is coupled to one of the user's ears; at least one sensor included in the housing; And a memory coupled to the housing and electrically coupled to the processor and configured to store audio data, the memory comprising: a memory configured to store at least one of the at least one sensor and the at least one sensor; Wherein the processor is capable of using the communication circuit to detachably attach to another one of the user's ears A request for connection to an external device configured to be mounted on the external device, and a request for connection of at least one signal received from the external device by reception of a response of the external device to the request for connection and / Based on at least a portion of the audio data stored in the memory, to determine which portion to output and to output the determined portion through the speaker. Various other embodiments are possible.