... , AM, IPOD,4 x 40W amplifier, touchscreen, USB port, SD slot, and GPS system 4. Touchscreen: reduces ... be connected to outside GPS equipment 10. Automatic switch to reverse, if have camera, can watch situation ... for making sure safety 11. Automatic switch to Bluetooth when call comes if you have ... audio can be output only 13. USB port, able to switch to DVD Buick Regal14. one year wattanty ...