DESC: The KWADV794 features a rear USB port for easy, high-speed digital connection to iPhone/iPod devices, digital audio players, flash memory drives, and most cell phones. 7" LCD Touch Panel is fully detachable, and includes a high-resolution, high brightness VGA monitor for superior video playback. MotionX-GPS Drive feature lets you add app-based on-screen navigation display and turn-by-turn voice commands when connected to your iPhone 4 (KS-U30 Cable Required). Bluetooth Wireless Technology supports hands-free dialing/calling as well as wireless audio streaming from your Bluetooth enabled cell phone or other devices.