Car Stereo Audio In-Dash Aux Input Receiver FM SD USB MP3 Radio Bluetooth Player
FM radio 2. Card reader U disk (audio) 3. AUX function 4. Bluetooth function 5. RCA audio output can be connected to subwoofer 6. Colorful lights 7. Voice assistant function (in Bluetooth mode, long press the knob to wake up the voice assistant) 9.