4inch Car GPS Stand alone and protableMP3 function, support WMA ,WMV formart.MP4 function, support ASF ,WMV,AVI formartPicture view,support JPG, PNG, BMP BrowsingE-book3D/2D NavigationVoice navigation and warningFeatures :4 inch TEF, 160000 color with touch screen CPU samsung SC-2440A(2410) 400MHz 300MHz 266MHzOperating system microsoft Win CE ,NET 4.2 core versionMemory SDRAM built-in32MB/64MB/128MB ,flash EPROMAntenna built in GPS high sensitivity receiver(SIRFIII)I/O input method stylus pen, software keyboardUSB client for ActiveSyncBattery embeddel Lithium-ion battery 1000mAh -1500mAh