M504t car GPS system support bluetooth,AVin , window ce 6.0 ,electronic map ,different languages ,etc M504T car GPS navigation device1. 5.0 inch TFT ... . Operating system: WinCE 5.05. Storage: internal 128M Nand flash / external SD card6. Types of operation methods: touch screen7. Functions: Navigation, MP3 ... , Ndrive,ect14. support 19 languages 15. with outside speakera car GPS navigation device