iCrius Bluetooth Receiver Compatible car aux (Black0818) Intelligent and Portable design: Built with Bluetooth 4.1/HFP/HSP/A2DP/AVRCP to smart yor life that you can enjoy music and hands-free calling from your smartphone in premium-quality sound. Intelligent noise reduction. Up to 33ft connection range guarantees low signal delay. Pen clip design,easy to carry,it's convenience to answer phone calls in fitness or workout