... 6.0 ,electronic map ,different languages ,etc M504T car GPS navigation device1. 5.0 inch TFT touch screen, solution: 480*272 ... screen7. Functions: Navigation, MP3, MP4, JPG picture,E-Book8. Numbers of signal receiver: 20 Channels9. Antenna: with GPS internal porcelain Antenna 10. With ... ,ect14. support 19 languages 15. with outside speakera car GPS navigation device