The Targus SonicPak™ features a padded notebook compartment to accommodate laptops with up to 15.4" screens. The fun and functional SonicPak backpack integrates quality sound speakers in a sporty laptop case. Featuring advanced NXT technology, which distributes complex sound using a flat panel format, the small and flat SonicPak speakers produce rich, clear sound with full stereo audio. Just connect the speakers to an MP3, CD/DVD, laptop or other digital device to share your music. Three 3-AA batteries provide up to 100 hours of continuous listening time, while the waterresistant panel and durable materials help to protect against the elements. Take the SonicPak anywhere – from form rooms and college campuses to camping trips, picnics and on the beach.