FM Radio: Bluetooth radio for car with high quality digital stereo, highly sensitive tuner, support for FM stereo tuning (87.5 ~ 108.0 MHz), 3 bands (FM1-FM2-FM3), can do 18 stations to save. You can listen to music, newsletters and traffic information while driving. Dual Knob Auto Radio: Car Stereo with bluetooth has dual knobs. A knob supports rotary electronic volume control, and another knob can be used for function switching and radio channel tuning, power on, power of. The screen will display time, volume, radio channel, etc. MP3 Media Player: 1 din Car stereo surround sound at 360 degrees, can be connected to four high-power speakers, allowing you to enjoy MP3 and WMA music copied from smart phones or other portable media players during the journey. The single din radio supports USB, SD card, AUX-in and other audio input methods. Car Stereo with Bluetooth: Car radio built-in microphone, supports bluetooth function, such as bt music, hands-free calling, making it safer for you to answer or hang up calls while driving. When using the APP control function, the smartphone controls the single din head unit via Bluetooth connection. APP Remote Control: Car stereo single din is equipped with APP remote control function. You can use the "CarRadio" app on your smartphone to control the MP3 player via a Bluetooth connection, so you can use your smartphone like a wireless remote, such as Changing channels, changing songs, Change settings, etc.NOTE: The QR code download link for the "CarRadio" app can be found in the user manual.