Characteristics Screen 7: inch hd car radio mp5 player with digital touch screen. Support: Bt or Rear camera (optional, not included in standard packing list) or Aux or TF or USB or Dynamic menu or Image navigation or Remote control. Audio playback Dis:mp3, wma, acc, ogg, wav, ra, ac3, mp2, amr and so on. Video playback: Avi, mp4, flv, pmp, rm, rmvb, mpg and other formats. Variety of sound adjustment (sel): Electronic volume, treble, bass, left and right balance, front and rear sound field. Latest Support: Folder Playback, Classified Storage, Free Broadcast, Display List. 1... Touch screen size: 7 inches 2... voltage: dc 12v 3.Speaker impedance: 4ohm 4.Maximum power: 50w x 4 5.Volume control: 8 db (low 100hz highs 10khz) 6... fm tuning range: Adjustment range: 87.5-108mhz Applicable sensitivity: 15db Snr: 50db Stereo resolution: 30db 7.Assistance of the car parking system. It will turn into parking mode automatically, record traffic. (rear view camera not Included) 8.High resolution: 1080p full hd. 7 inch lcd touch screen give you a fantastic experience to watch hd video. Reproduction format of avi or mp4 or flv or pmp or rm or rmvb or mpg. 9.bt function: built-in bt for wireless audio streaming, built-in microphone for speakerphone call. Solve your call problem when You drive. What else is it Connect your phone with bt function, increase the sounds of your GPS and your favorite songs in the car Speaker. 10.Multifunction: high current usb output, can be charged mobile phone Play the role of your mp3, mp5 player, radio, your parking sensor, etc.It is your best choice for your car.