4
1. POWER
2. MP3
3. MAP
4. +/- BUTTON
5. MENU
6. SPEAKER
7. DC IN
8. USB
9. RESET
10. SD CARD SLOT
11. CHARGE INDICATOR
12. BUILT-IN GPS ANTENNA
13. TOUCH SCREEN
14. TOUCH STICK
15. ADJUSTMENT BUTTON
16. HEADPHONE JACK
17. EXTERNAL ANTENNA JACK
1. Brief introduction of hardware
4V1 Hardware Instruction Manual
