Delivering on the promise of sound beyond size, the officially licensed Team Promark Shock Wave Personal Audio Speaker is petite in size but massive in sound. Hook it up to your mobile phone, MP3 player or laptop then place the speaker on any hard surface and enjoy the dynamic sound and unbelievable bass. The Shock Wave speaker uses vibration technology that turns any hard surface into a giant speaker. Pump out your tunes with crisp clear acoustics that will easily fill up a room and elevate the mood of everyone around you. This speaker gives you 3 hours of active use on a single charge and is perfect for tailgating events, home or office. It comes with a stereo and USB connection and features full color graphics. Team ProMark offers innovative new licensed products from the most popular leagues and sports teams in America.