The Pioneer ND-BC5 is recommended and sold separatelySteering Wheel Control Ready: PAC SWI-PSv1 or the Axxess ASWC required and sold separatelyRear RCA Video Output: Used for connection to separate monitors and devicesRear RCA Audio/Video Input: Used for connecting video accessories such as game consoles, video cameras, etc.Built-in Bluetooth technology for hands-free talking and audio streamingBl