Baile Bluetooth 2-in-1 Receiver/Transmitter BT-010 Wireless Bluetooth Adapter with Stereo Music Transmission for Home Audio System,Speaker, iPhone,TV, PC(black) 2-In-1 bridges your Bluetooth device to your speakers or your Bluetooth speakers to your audio device Simple one-button switch to shift between transmitter(TX) and receiver(RX) mode. TX Mode:Plug in to your non-Bluetooth device and pair up your Bluetooth speaker or headset. RX Mode: Plug into your non-Bluetooth speaker and pair up your Bluetooth Phone or MP3 Player Bluetooth-enable all 3.5mm media devices (enable Bluetooth receiving: speakers, headphones and more; enable Bluetooth transmission for: MP3, CD / DVD players, e-readers, TVs and more) Built in battery for portable use, or fast-charging through the USB cable, BUT it can not be used while charging Ideal for any powered speakers or devices using standard RCA or 3.5mm jack or AD2P Bluetooth