The Blare Bluetooth Speaker 15” Computer Backpack lets you take your music with you wherever you go. This backpack features a removable Bluetooth speaker that lights up and changes colors when playing music. Playback time for this backpack is 2-3 hour with the light ring and 4-5 without the light ring. This backpack also offers a 15” computer sleeve, an organization panel in the middle zippered pocket, a front zippered pocket and a side water bottle pocket. Charging your device will be easy with the included USB port and cord.