This compact and stylish Auto Drive Low Profile Bluetooth FM Transmitter is a must have item which is very easy to install and operate. After you pair it with your Bluetooth device, you can use it to wirelessly transmit audio from your devices to car FM stereo by adjusting the radio and transmitter to the same frequency. The built-in microphone and hands-free function switch between incoming calls and music seamlessly which also cause less distraction during driving. Equipped with dual USB charging ports that can charge your device up to 2.4A (one of the ports reads USB flash disk too). LED screen displays frequency clearly and its internal safeguard system protects your device from overcharging and overheating. Adopted Bluetooth technology,the Bluetooth Car transmitter compatible with iPhone,iPad,iPod,Tablet,Samsung,Black berry,Sony etc.It is easy to set up and use.