Plasma Ball, powered directly from a USB port on a Computer or a Laptop. This is a fun little gadget to have on your desktop for those boring times when you need a little distraction. Just plug it in, turn it on, and watch the electricity flow in the globe. For added fun, run your fingers along the globe, and watch as lightning jumps out towards it. Have fun at work, and liven up your desk with this USB Plasma Ball.