... Storage: internal 131M Nand flash / external SD card9. Types of operation methods: touch screen7. Functions: Navigation, MP3, MP7, ... JPG picture, textbook, calendar 8. Numbers of signal receiver: 23 Channels9. Precision of Locating:Less than 13m13. Antenna: with ... continuously use for about 8 hours16. support different country's map, including French, German, Spanish, Holland, Hungarian, Portuguese, ...