Patu USB Powered Wireless Bluetooth FM Transmitter - Auto Radio Adapter, 87.5-108.0 MHz Full Frequency, Transmit Music, Phone Call, Voice Navigation From iOS Android Smart Devices to Car Audio, Black Portable USB powered design, automatically connected once power on and play music once connected. Wireless Bluetooth hands free connection for smart devices. Hands free talk when a call in. FM frequency shown on the display screen. Full frequency range design to avoid interruption. Support Micro-SD card and the MP4 / WMA format music files in it. Read Micro-SD card directly. Conveniently share music from passengers' smart devices via car stereo, only to reconnect Bluetooth.