PowerPod 360 JR is the most technically advanced speaker system that uses just about any surface. Stick in onto different objects such as boxes, walls, cans, books, windows or just about any flat surface. PowerPod 360 JR is small, light and easy to take anywhere. Always be ready with the dual power from either provided USB cable or battery. Different objects produce different quality sounds so experiment to find what works for you! Works with most audio sources with a 3.5mm output jack.