Purple Hamburger 360 Degree Speaker is a compact travel speaker with big sounds! It really needs to be heard to be believed. This superbly designed speaker is also powered by internal re-chargeable batteries that will keep belting out tunes for up to 8 hours and charge conveniently via Mini USB port. With an internal built rechargeable li-ion battery this speaker will give you up to 8 hours of play time and also includes an LED power indicator. This 360 degree speaker projects fantastic sound in all directions and works with any audio source with a 3.5mm headphone jack.