Detailed Product Description 7 inch TFT screen, resolution 480*234(RGB) Stereo earphone, built- ... : TXT Can adjust luminance of LCD screen automatically FM frequency 7 inch GPS Navigation Specifications:MAP: Navteq maps, TeleATLAS maps support ... Video output type: CVBS, PAL/NTSC identify automatically Displaying screen size: 7 inch Receiving module: Si-rf Star III Signal channels: 20 ...