... operation methods: touch screen7. Functions: Navigation, MP3, MP5, JPG picture, textbook, calendar 8. Numbers of signal receiver: 21 Channels9. Precision of ... and reserved external GPS Antenna jack11. Battery: with 1100mAH built-in Lithium battery, can continuously use for about 6 hours14. support ... , Russian, Swedish, Norwegian, Denish, Italian, Finnish, English.15.with AV IN and fm16) (BLUETOOTH)