The Rock Box™ from Cycle Sounds® is the industry's smallest and all-in-one audio source unit that is truly a revolutionary device that packs a lot of functionality into a compact and easy to operate package. Mode selections include FM Stereo with six radio station presets, USB port that allows playing all your favorite tunes from a thumb drive as well as charges most mobile devices and 3.5 mm aux input that allows you to bring your MP3 player, satellite radios or music enabled phone along for the ride. Other convenient functions include a clock, temperature gauge, bass and treble controls and illuminated buttons and display for night riding. The Rock Box makes an excellent companion for Cycle Sounds motorcycle speaker systems (sold separately) as well as works with all other amplified speaker systems. Easy and quick power connection harness make for simple installation on any bike without the need for batteries. The back of the unit is equipped with a threaded 4-hole AMPS mount pattern for various mounting options available from Cycle Sounds (sold separately).