BIGGEST SOUND, SMALLEST PACKAGEJAMBOX delivers stunning hi-fi audio in a portable wireless speaker so compact you won't believe it when you hear it. It's loud. With an output capacity of 85 decibels, JAMBOX fills even the largest rooms. Unlike other portable speakers, JAMBOX is powered by a pair of proprietary, highly sophisticated acoustic drivers, unmatched in their ability to produce extreme high (tweeter) and low (woofer) frequencies from a single, ultra-small dome speaker. They work in concert with an innovative moving-wall passive bass radiator and airtight enclosure to deliver shimmering highs and thumping lows that you can literally feel - the richest sound all in the palm of your hand.