This revolutionary, multi-function backpack takes your tunes into the future. Through mind-blowing technology and an ultra-thin NXT internal speaker, you can listen to your iPod privately through a headset, while having full control of your iPod through the 5-button system located on the back strap, or play your tunes loudly through the speaker, by connecting your iPod, MP3 or other audio device. Now you?ll never need to carry extra speakers while traveling