4 inch 800x480P Car Radio Receiver MP5 Player, Support FM & Bluetooth & SD Card with Remote Control Feature 1. radio 2. U disk SD card (audiovideopictures) 3. Bluetooth function 4. RCA audio output can be connected to a subwoofer 5. Rear view function when reversing 6. AUX input function 7. Video input function 8. COMPATIBLE car steering wheel learning function 9. Mobile phone interconnection Android AUTOApple CarPlay 10. Colorful lighting function 11. Rear USB function 12. USB charging port 13. Power supply reverse polarity protection function 14. External wheat head function Specifications 1. System: Quanzhi melis system 2. Software solution: F133 3. Radio frequency: FM 87.5~108.0MHz 4. Radio IC: QN8035 5. Power amplifier IC: CD7388CZ 6. Output power: 60Wx4 7. Working voltage: 12~14.4V 8. Working temperature: -10~60 degrees Celsius 9. Bluetooth version: version 5.1 (default name: Carkit) 10. Display resolution: 800x480 11. Screen size: 4-inch resistive touch screen 12. Front and rear USB: 2 front USB interfaces (one charging and one USB 2.0 reading) + 1 rear USB 2.0 reading 13. RCA parameters: Audio output: 2 channels (left channel + right channel) Video output: 2 channels Audio input: Front AUX input Video input: 1 channel Reversing video input: 1 channel 14. Audio format: MP3AACAPEOGGM4ARAWAV 15. Video format: H263H264H265DIVX HD(720P 1080I 1080P)AVIFLVMKVMPEGMP4WMV9VCASFTSQT 16. Image format: JPEGPNGBMPGIFTIFF 17. Languages: English, Chinese, Spanish, Portuguese, Russian, German, French, Polish, Turkish, Arabic, Hebrew, Italian, Czech, Japanese (less languages require software update)