Koolertron Car DVD GPS Navigation Player with Digital Touchscreen /PIP /Bluetooth/iPod for Mazda MPV 2000-07
This is a rare item which there has been no review prior to my purchase. I gambled anyway with the thought of matured technologies...how bad could it be.  The good comment is the high pixel density which it has translated to good DVD playing and back up camera viewing.  Now comes the bad...the navigation doesn't work at all (keep on prompting no software installed).  Only the Source (SRC) button will light up which is difficult to press any button at night.  MP3 song list out of sync (it was not in any kind