The BT receiver is specially designed for headphones, car stereo systems and home audio system, turning devices without BT into BT-enabled devices, and easy to pair with smart phones, laptops, tablets, etc. BT compatible. With this product, you can fully enjoy music from your phone, laptop, MP3 and more without the hassle of cables. Features: BT Audio Receiver: Turns traditional speakers, wired headphones, and car stereos into BT-enabled systems. After pairing, play music wirelessly from your BT-enabled audio devices. BT 5.0 connection: BT 5.0 wireless technology ensures high-quality, high-powered signal transmission speed. Hands-free call: It works perfectly in the car. With a built-in microphone, it supports hands-free calling. One button to answer and end calls, it ensures driving safety. NFC connection: NFC function, close to the device for connection, no need to search. (Make sure your phone’s NFC and BT are enabled.) Dual Audio Port: Comes with 3.5mm and 2 RCA audio port,