Play your iPod(TM), MP3, or CD player. Surprisingly rich sound. Easily connects to any music player through the 3mm headphone jack. Separate volume control. Amplified speakers boost sound output. Portable, foldable and lightweight stereo speakers. USB power cord included. Operates on 4 AAA batteries (not included). Item size: 7.5""W x 2.5""H x 1.125""D." Case Pack 25 Please note: If there is a color/size/type option, the option closest to the image will be shipped (Or you may receive a random color/size/type).