MFEEL Wireless In-car Bluetooth Fm Transmitter Car Charger with Dual USB Port, Music Control and Hands-free Calling for Iphone 6/6s, 6/6s Plus, 5 5S 5C, Samsung Galaxy S6 and more Multifunctional Design 5 in 1:Wireless Bluetooth in-car Multifunction 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 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.