SMALL SIZE, GOOD SOUND: Two speakers with dimensions at less than 3 inches per side, to output full, rich audio from your PC/laptop/notebook USB POWERED: Both speakers draw all their power through the USB connection so you don't have to worry about finding an outlet or carrying around an adapter. The USB cable length is 3 ft long. 3.5mm AUDIO PLUG: Audio plug quickly connects to most PCs and mobile devices. Need to connect audio plug to computer for sound to operate. The USB cable is 3 ft long. VOLUME CONTROL: More convenience with an in-line controller that lets you quickly adjust the volume of the speakers without having to change the volume on your device BUILT FOR TRAVEL: 3 Yr Manufacturer Warranty. Compact form and durable construction mean you can have sound most any place you go; a great fit in your laptop bag, briefcase or bookbag