1.Upgraded Version: Our Bluetooth AUX adapter receiver is designed for wired/old audio system. It provides a wireless audio solution for any of your non-Bluetooth home audio devices or car speakers. No batteries required, easy to use, mini and compact design, takes up no space and is easy to carry. With a connection range of up to 33 feet, you can get rid of cluttered cables and experience the convenience of wireless music. 2. & Widely Compatible: Just plug the 3.5mm AUX cable into the adapter and plug it into the aux jack of your device, switch to the mode you need (RX/TX) and you can use it easily. Widely support all Bluetooth devices (for example: iPhone, iPad, iPod, tablet, Samsung and other Andriod smartphones) to pair as a hands- kit. Very suitable for your old home/car audio system and wired headset/TV/PC etc. Can provide you with high-definition wireless stereo music/hands- calling 3.Excellent performance design: 2-in-1 design is not only a Bluetooth receiver or a Bluetooth transmitter, Our device has two uses, making your life more intelligent. The button design allows you to use it conveniently and quickly, and you can easily switch in the transmitter/receive mode to solve your various usage needs. At the same time, just click a button to answer/cancel/end the call so you can drive ly. In addition, it also supports voice navigation of mobile phones 4.Reliable Quality: With the latest version of V5.0EDR and high-definition audio technology, our Bluetooth receiver transmitter can be connected to the device more stably, and can transmit quickly and reduce noise as well as low latency to ensure excellent stereo effects. Built-in high-definition microphone so you can talk hands-. CVC noise reduction technology makes your call more clear. Automatic pairing connection function and dual connection, making your music sharing easier