The Kenwood KDC-X701 Excelon Bluetooth Indash Car Stereo allows up to 5 Bluetooth devices can be connected to the head unit at the same time, and you can enjoy audio streaming just by switching the devices with your friends or family. A smartphone application can control most basic functions of the receiver over the Bluetooth connection of the paired phone (iPhone or Android). Simply install the Kenwood Music Play application onto your Android smartphone, connect it to your KENWOOD receiver via USB, and control your music directly from the car audio receiver. A large volume knob and buttons are intuitively placed, reducing distraction and promoting safety. Bright variable color LED's can be adjusted to match any color dash lighting.