Motorola Droid Turbo 2 Compatible Universal Car FM Radio Transmitter Phone Mount Charging USB Port Universal Car Mount with Charging USB Port and Handsfree FM Radio Transmitter. Built-in overcurrent protector guards your device battery against overcharge damage. USB Output: 5V 1A. 4-In-1 Features: FM Transmitter, Handsfree, Holder, Charger. 360 Degree Rotatable. Comes in Retail Package. Frequency Range: 88.1MHz-107.9MHz. Restore the last frequency and volume when you restart the device Support Handsfree function: voice calls out through the car audio system when using devices via 3.5mm jack cable. LED display. - NOTE: COMES WITH A MICRO USB CABLE ONLY. DOES NOT COME WITH IPHONE CABLE. USE YOUR OWN IPHONE CABLE.