Findway? 3.5mm AUX Wireless Bluetooth Car Stereo Audio Adapter/Receiver Kit with Hands free Calling / Wireless Music Streaming for Apple iPhone, Samsung, Sony, Blackberry, Tablets, MP3 Players & More Smartphones Supports Bluetooth v3.0+EDR and Bluetooth 2.1, Bluetooth 2.0, 1.2, and 1.1 backward compatibility. Frequency range 2402MHz-2480MHz. 3.5mm audio out. Can answer calls. Operating range 10m-20m (Depending on environment). Supper low power charge standby. LED indicator. Micro USB charging. Share your music wirelessly from mobile phone, Notebook, PC, tablet pc, iphone and other Bluetooth device when connect with Aux speaker. Built-in microphone with Bluetooth hands free function. Built-in high capacity lithium battery 100mAh.