1)creative design , compact and fashionable 2)RF two channel stereo wireless receiver, the effective distance is 5m-10m 3)electronic all channel automatic searching FM radio (FM 88M -108M) 4) connecting with HiFi earphone 5)automatic consumption decrease design , low power consumption, long using time 6) special chip, high receiving sensitivity 7) the transmitter is powered by USB directly, no need battery 8) in-built a lithium cell inside the receiver 9) USB modular charging, convenient and simple 10) supporting various audio facilities with USB audio output jack (e.g. television, computer , DVD, CD, MP3, MP4, language learning reciter etc)