GROM Audio SUB08U3 for Select Subaru Cars USB iPhone Android Interface Adapter; Bluetooth, HD Radio AUX Capable Connect USB 2.0 flash drive, mass storage device to car stereo for music play and control Connect your Android device via USB to car stereo for music play, charge and control Connect your iOS device to the factory car stereo via USB port. Play music, control from car stereo or steering wheel, and charge at the same time. OPTIONAL: GROM Bluetooth Dongle (SKU: BTD); AUX-In 3.5mm and 5V USB charging cable (SKU: 35USB); HD Radio tuner (SKU:HDR1) Please see compatibility list in Product description! For help with installation please watch "GROM Audio" video channel at YouTube.com.