Portable audio adapter that can be used as either a Bluetooth transmitter or receiver and can be connected to any device which has 3.5mm or RCA audio jack for wireless audio streaming. Thanks to the Bluetooth V4.1 and aptX Low Latency technology which reduces the end-to-end lag time to 40 milliseconds, it provides high fidelity and low latency sound streaming from any TV or other connected audio devices located within 20 meters distance. The adapter allows for easy switching between TX (Transmitter) and RX (Receiver) Mode, while the built-in lithium polymer battery allows a portable use for up to 13 hours audio streaming. It also supports multi-point connectivity for audio streaming to up to two Bluetooth headphones or speakers simultaneously, as well as voice prompt function in English. A 3.5mm audio cable, a RCA cable and a USB cable are all included.