Carpanion Wireless Bluetooth Fm Transmitter, in-car Bluetooth Receiver, fm Radio Stereo Adapter, bluetooth car charger with Handsfree Calling and USB Charging Port Up to 2A Multi-functional Design 5 in 1:Wireless Bluetooth in-car Multi-function FM Transmitter enables you to do Hands-free calls, enjoy clear music, GPS voice navigation, charge your device. Better for empty channel. Guarding your driving:Built-in Microphone,you can makes hands-free calls easy while driving.Enjoy your safety driving. EASY TO USE: pairing your phone and FM transmitter by bluetooth, insert device in the socket, switch to FM radio mode, make sure FM transmitter frequency the same as car's FM, then you can enjoy your music what you want. Compact, lightweight and simple design - perfectly portable and unobtrusive. Dual USB Charging port:Output voltage,DC 5V/2A. You can charge your iPhone/iPad/tablet/and other smartphone when you enjoy your driving.2 USB socket support U Disk to play music in your car speaker.Compatible with Apple iPhone, iPad, Samsung Galaxy S, Samsung Galaxy Note, Nexus, HTC, Blackberry and Android, Blackberry & Windows Smartphone, etc.