FM Transmitter Hands-free Car Kit Wireless Bluetooth Car Adapter with USB Charging - BC33 • The Bluetooth FM modulator for car is compatible with all Bluetooth devices. Great for Bluetooth Stereo music playing • Built-in microphone with noise cancelling technology enables you to safely answer and end phone calls while driving in one click • Functions also include answering, rejecting, redialing calls, adjusting volume, changing music and voice navigation via car audio • Automatically starts charging your device after connection through USB port, Built-in 2 USB ports that Support fast charging • Easily connect, Plug it into the cigarette lighter socket, Turn on the car FM radio, Find an empty frequency, Adjust the device to the same frequency, Pair Bluetooth. Full FM range 87.5 - 108 MHz