There are many kinds of Bluetooth FM transmitter, but this one is very special.

The Fm transmitter has two USB ports, dual USB ports output 5V 3.1A.

The LED display screen can display not only Car battery Voltage/Current, but also FM Frequency, Play Status etc.

This version utilizes Bluetooth 4.0 technology

This fm transmitter provides hands-free driving and transmit audio to car speaker system.