Kuryakyn 2714 Road Thunder Sound Bar (By MTX, Silver) An internal amp powers two 2" x 3" full-range speakers and four high-frequency 1" tweeters to pump out crystal clear tunes to please the likes of any audiophile Includes power, ground and ignition wire for easy disconnect, as well as auxiliary input for connecting devices via 3. 5 mm cable All weather construction for use on any vehicle, weather resistant in accordance with IP66 rating