It supports microsd and usb drives for playing stored content easils over the radio

The charging ports are a big plus i can charge my phone while transmitting bluetooth signal as this eat up a lot of battery life out of the phone most especially when you are playing music as well

This fm transmitter has been incredibly convenient just getting into the car and having my phone paired automatically when the car turns on able to listen to gps instructions music or make calls on the go

The person i called had no issues hearing me and the clarity was great as they were talking to me through the speakers