Original look, improved performance, same reliability. Fall in love all over again with the fresh CS wireless headset series. Another CS family headed for the bestseller list. Plantronics legendary CS family is setting a novel wireless standard for desk phone communication with the CS500 Series. The original system features the lightest DECT headset on the market, a original streamlined design and improved performance all with the same reliability for hands-free productivity that has made the CS family a bestseller for nearly a decade.