The VG-amp portable speaker system sustains high quality music and sound wave lengths for listening pleasure. Speakers heighten your cinematic experience by providing dramatic sound, perfect match for your HD quality videos. Not only does this case allow you to play clear defined music and sound from your device for all to hear, but it also protects your device while traveling due to the case’s reinforced EVA wall that is also wrapped in scratch-resistant nylon. Case is compatible with any audio device with a 3.5mm headphone jack. Ideal for any Android smart phone or other MP3 players, and requires two AA batteries for operation (not included). Durable clip has been woven and attached to the case to allow convenient clipping onto any traveling pack or luggage. *** MP3/Device is NOT included ***