Top-Navi 7 Inch 1G CPU Car DVD Player For Dodge Ram 1500 with GPS Navigation Built-in S100 system Stereo V-20 disc changer memory(20 disc music can be memory in the unit while you listening the music. 2. Picture ON Picture fucntion Picture ON Picture fucntion All keys with red green colors adjustable, match your original car perfectly. Three Zone function, listening to Radio/watching GPS image in the front and watching DVD/USB/SD/TV from the back Monitor. Built in 4G Flash. Sumsang CPU 1G MHZ, DDR: 512MB. Support Bluetooth, phone book ,3G modem , camera and parking sensor.