3.5 inches TFT high resolution 320*240. ARM9 400MCPU used as the main processor, high-performance, low power consumption. External high-fidelity stereo headphones, built-in high-fidelity speakers. Audio player software to support playback WMA9, MP3, and WAV format. Video player supported file formats: ASF, AVI, MP4, WMV. Photo Software Support: JPG, GIF, BMP, and PNG.. Built-in lithium battery, charging via an external DC 6V or through a car cigarette lighter adapter, car access to the machine charge. Text format: TXT. MP3/MP4 entertainment features to reduce your fatigue. Built-in GPS antenna, external antenna can be connected. Can be directly run the SD card navigation software.