X-gps S550hd 5.0" Hd 800*480 GPS Navi+sirfv+128mb Ram+4gb Au/ Us Map&radar Detector
Will not charge at all via the car charger.  Once the battery dies which is not that long it is totally useless.  Also the radar detector does not work.  The GPS itself seems really cool and accurate until the battery dies.  I will try to send it back and let you know what comes of it.