Streambot 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.