Cycle Sounds Rock Box All-In-One Audio Source The smallest all-in-one audio source allows you to listen to your favorite FM radio stations and MP3/MP4&rsquo;s, tell time and check temperature from one unit Features six radio station presets, home and away functions, USB port for thumb drive, easy to access volume controls, function buttons and an auxiliary input to connect a separate music device Powered USB port allows for MP3 playback via a thumb drive and also doubles as a charging system for most any USB device An excellent companion to Cycle Sounds motorcycle speaker systems or as an upgrade for any fairing radio Approximate dimensions: 4-1/4 in. W x 2-3/8 in. H x 1-1/4 in. deep