Convert wired ear-buds to wireless headset. Convert wired speaker to wireless Speaker
Two-link: can connect two Bluetooth devices at the same time. With this receiver, Aux socket can receive music from cellphone wireless
Transfer wire headphones to wireless Bluetooth headset: then connect to iPhone, Android phones, other smart phones which with Bluetooth A2DP functions. Stereo Audio Output: Use with home stereos, speakers, car stereos, headphones etc by 3.5mm stereo inlet socket.