Abstract: A wireless earphone includes: a wireless transmitting/receiving unit for transmitting/receiving a signal to/from the portable terminal according to a short wireless communication scheme; a voice detecting unit for detecting a user voice signal with being inserted into an ear of the user; a signal processing unit for converting a short range wireless communication signal received through the wireless transmitting/receiving unit to an audio signal, eliminating noise and echo from a voice signal received through the voice detecting unit, converting the noise and echo eliminated voice signal to a short range wireless communication signal and transmitting the short range wireless communication signal; an output unit for outputting the audio signal received from the signal processing unit; and a power supplying unit for receiving power and being charged when the wireless stereo earphone is attached to the mobile terminal, and supplying the power to each element of the wireless earphone.