VicTsing Bluetooth FM Transmitter for Car, Voice Navigation Car Radio Transmitter, Wireless Radio Adapter Car Kit with Hands Free Calling, Dual USB Ports, Power Off and Music Player Support Aux Input Voice NavigationWith this bluetooth fm transmitter, you can get clear voice navigation from your phones app. It will self-adjust volume for navigation when playing music. No more hassle but full of exploration on your trip. Easy Switch from Hands-free Call to Private Call Bluetooth 4.2 technology offers more stable connection and consumes less energy for clearer and hassle-free calls. This bluetooth radio transmitter is easy to switch to a private call when receiving a call by pressing the CH button. Power ON/OFF and Efficient Charging This bluetooth car transmitter can be plugged in to power on and unplugged or long press the CH button to power off. One 5V/2.4 A USB charging port charges your smart device quickly. The other USB port supports reading U Disk up to 32G. Free to enjoy music and get smart device full charged. Clear Music From 4 Play Modes Stream stereo music freely in 4 ways: A: U Disk (32G); B: TF Card (32G); C: Aux Input (via the included 3.5mm Audio cable); D. Bluetooth Connection. Compatible with iPhone, Samsung, Sony, Android devices, iPad, MP3 player, and other Bluetooth-enabled devices. Fulfill your trip with your favorite music. Soft and Clear LED Display Easy and comfortable to view volume, car voltage and FM frequency displayed on the LED screen. This fm radio transmitter help you always stay concentrated on your drive and reduce eye fatigue.