Polycom Compatible Plantronics VoIP Wireless Headset Bundle with Electronic Remote Answerer (EHS) included | Earwrap - On Ear Model | SoundPoint&reg; Phones: IP 335, IP 430, IP 450, IP 550, IP 560, IP 650, IP 670, VVX300, VVX500, VVX310, VVX600, VVX400, VVX1500, VVX410 Polycom VoIP Compatible - Includes Electronic Remote Answerer Interface Cable (EHS) Polycom Compatible Phones: SoundPoint Phones: IP 335, IP 430, IP 450, IP 550, IP 560, IP 650, IP 670, VVX300, VVX500, VVX310, VVX600, VVX400, VVX1500, VVX410 Range up to 350 feet away for maximum mobility Seamless connectivity with Polycom IP Phones Premium wideband audio quality