Portable Hands-Free Calling Bluetooth Receiver for Car Audio Radio and Home Audio This small Bluetooth can empower the car radio and traditional wire-connected home audio speakers to perform the music from your Bluetooth enable devices. It can offer hands-free calling, music playing from RF card and flash drive during driver with an extra car charger provided. FM function of this cool gadget can turn your normal home audio speaker to become a home Radio. Specification: Bluetooth Version: 2.0 Bluetooth Range: Up to 30 feet Output: 3.5 mm audio cable Power Source: built-in Li-Battery charging through micro USB cable Ports: TF slot, USB flash Mode: Bluetooth/ TF card/ USB Driver/ FM Detachable magnetic holder Built in microphone for hands-free calling function