Giant bursts of sparks shower from the palms of your hands. Amazingly there is also the real crackling of electricity, creating an effect that will astound. Units (2 included) have adjustable finger clips and are easy to handle. Includes (2) 3 volt glo plugs for ignition. Requires flash paper and flash cotton, sparkle additive, and 4, inchesN inc alkaline batteries (all not included).