The SK-EX-III is a very effective disc media static eliminator By simply placing your disc media into SK-EX-III and closing the top for a mere 30 seconds, static charge will be eliminated. The SK-EX-III does this using 100% Thunderon® - a unique conductive filament material that consists of a very fine acrylic fiber chemically bonded with copper sulfide. The SK-EX-III is easy to use, requires no batteries or mains power and is the perfect complement to your disc media and for your listening pleasure.