2in1 design, can be used as BT transmitter and receiver, low latency technology, support dual lossless audio formats, gives you a high quality sound. A great device that can add BT capability to your No-BT device, like TV, iPod, CD player, PC, MP3/MP4, etc. At transmitter mode (TX), turn a non-BT TV, PC, CD player, iPod, MP3 / MP4 into a BT transmitter while pairing with BT stereo. Receiver mode (RX): Ideal for home or vehicle music streaming sound system. Easy to use, plug and play, no drivers or Apps needed. Compatible with Android & iOS cellphones, pad, BT audio devices and stereo equipment with audio input port.