Easy to use: Simply plug into cigarette lighter socket. Control directly as an FM transmitter. Volume frequency and song control through turn knob Bluetooth hands-free calling charging for your phone.</br>Bluetooth & U disk & Micro SD card audio: Wirelessly stream high quality stereo audio via Bluetooth connection to compatible devices or insert U disk and micro SD card</br>Dual USB port fast charge: Equipped with dual USB port 5V/2.1A Dual USB Charging provides fast charging speed; Another designed to charge and read U disk and USB flash drive</br>Ergonomic design: compact gadget with built-in microphone and micro SD card slot ideal for on the go hands-free phone calls and music. High contrast digital screen display for higher visibility</br>Full 206 channels optional from 87.5-108.0MHz please choose it according the local condition</br></br>Product Description</br></br><p><br><b>Features:</b><br>1. Wirelessly transmit phone call from mobile phone to car FM Stereo system <br>2. Switch to Hands-free mode automatically from music playing status when receiving call. <br>3. Built-in Microphone. <br>4. Supports music playing from USB/Micro SD card <