Bluetooth Receiver/Transmitter, 2-In-1 Wireless Bluetooth Adapter /Stereo Output /Just need connect to 3.5mm AUX cord on the TV ,Speaker,PC, iPhone, iPod, iPad, Tablets , MP3 Player Or Car The best aux to Bluetooth, 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 it 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. package list:1 x Bluetooth Receiver/Transmitter, 1 x micro USB charging cable, 1 x 3.5mm -3.5mm Audio Cable, 1 x user manual.