... operation methods: touch screen, keystroke 7. Functions: Navigation, MP3, MP4, JPG picture, textbook, calendar 8. Numbers of signal receiver: 20 Channels 9. Precision of ... built-in battery) 12. support different country's map; support 16 languages including French, German, Spanish, Holland, Hungarian, Portuguese, Russian, ... :weight/box:1.9KGS gift box:18.1*12.2*9.8cm 5 inch touch screen GPS Navigator