CS500 XD™ SERIES -- A new addition to Plantronics legendary CS family for desk phone communications, the CS500 XD Series is a high-quality solution for fitting more wireless headsets in an office environment.<p>PRODUCTIVITY, UNPLUGGED: <BR>For even the most dense environments help everyone be more productive with the CS500 XD Series wireless headsets for desk phones. Get convenient company-wide deployment and desk phone compatibility.<BR><BR>Everyone in the office could use more flexibility. Let them roam confidently 350 feet from the headset base with unlimited talk time option. They'll be able to collaborate simply, since teams can conference up to four headsets on a single base.