Turn any smartphone or mp3 player with Bluetooth capabilities into the ultimate mobile sound system. Wirelessly connects your Bluetooth-enabled device to Kuryakyn Road Thunder Speaker Pods or almost any other self-amplified speakers. This universal Bluetooth audio controller replaces the head unit and is easy to install. Compatible with most Bluetooth devices, including Android and iPhone. Includes two adjustable bar mount brackets for 7/8in. through 1in. bars and 1 1/8in. through 1 1/4in. bars. Durable, weather-proof design with included power, ground and output connections.