4-in-1 Hands Free Wireless Bluetooth FM Transmitter
Bluetooth FM transmitter: send the music of mobile phones / U disk / TF card to car audio.
Car charger: charge mobile phone/tablet through the USB interface, max output up to 2.5A.
LCD display FM frequency and voltage, more convenient to use.
Car USB, can read via USB U disk, or via TF card slot.
This device transmit signal by wireless method, no need to modify anything in car. It can be used both as the music player in entertainment purpose or hands-free car jut for the safety driving purpose.