1. Radio. 2. Reading card, U disk (audio/video/) 3. Bluetooth function 4.RCA audio output can be connected to subwoofer. 5. Backward function 6. Video input. 7. Steering wheel learning function 8. Mobile connectivity wired Android AUTO/ wired CarPlay. 9. Colorful lights 10. Rear USB. 11.USB charging port Material: plastic + metal Color as shown Model number: 151C Type: On-board MP5 System: The Whole system Radio frequency: 87.5 to 108.0MHz FM Output power: 60Wx4 Operating voltage: 12~14.4V Operating temperature: -10~60 Bluetooth version: Version 5.1 (Default name: Carkit) wifi frequency: Not supported GPS signal: Not supported Running memory: 533M Installation size: 178x52MM Shell size: 188x82MM The depth of the is 80MM Support: mobile phone interconnection, reversing , play video warning, steering wheel control, video output, dashcam Screen rotation: Not supported GPS navigation: Not supported USB Front USB charging (red) + front USB2.0 read (black) + rear USB2.0 read TF card: Supported Audio formats MP3 / AAC//OGG /: M4A/RA/WAV Video H263 / H264 / H265 / HD (720 p 1080 I 1080 p) //MKV/MPEG/MP4 / WMV9 / ///QT JPEG/PNG/BMP/GIF/ Language parameters: English, Chinese, Spanish, Portuguese, Russian, , , Polish, , , , Italian, , Japanese Package Contents: 1X MP5 Player 2X power cord 2X disassembly key 1X English Instruction Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.