Bluetooth FM Transmitter, RyuGo Wireless Car Radio Transmitter, FM Stereo Adapter, Car Kit Handsfree Calling MP3 Player Support U Disk with Dual USB 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 make hands-free calls easily while driving. Besides, it supports aux line audio input and U Disk (only the right usb port) to play music in your car speaker. Wide Compatibility: Compatible with iPhone 6 6+iPad Air, iPad Mini 2, Samsung Galaxy S4/3, Samsung Galaxy Note 3/2, Nexus 5/4, HTC One, Blackberry and Android, Blackberry & Windows Smartphone. Dual USB Charging port: Output voltage,DC 5V,2A.You can charge your iphone/Ipad/tablet/and other smartphone when you enjoy your driving. Two USB socket support U Disk to play music in your car speaker. Service: If you buy item from RyuGo, we will do our best to support you, please contact RyuGo customer support if there is any problem before review.