Description Watch with amazement as the electricity follows your finger tips. The USB Plamsa Ball creates a unique environment on your desk or work station that will impress your co-workers and friends. The USB Plasma Ball is small enough to not take up too much desktop space and yet big enough to amaze your co-workers with its awe-inspiring light show at the touch of your finger. The USB Plasma Ball does not require batteries and is powered entirely by your computer's USB port. Features Plug and Play Installation Works with any computer platform (including Mac and PC) No Batteries required Safe for all environments Electricity reacts to touch