DON'T COMPARE This Professional Office Wireless Headset for Polycom Phone, NOT for Computer, With General DECT headset / Bluetooth headset. Compete with Plantronics Headsets or Jabra Headphones for telephone. 2 Year Warranty, 20 Year Proven Quality in The World PACKAGE PRICE DEAL : Wireless headset for office phone with Remote Answering EHS Cord for Polycom VVX series vvx101 vvx201 vvx300 vvx301 vvx310 vvx311 vvx400 vvx401 vvx410 vvx411 vvx500 vvx501 vvx600 vvx601 vvx1500 and Polycom Sound IP 335, IP 430, IP 450, IP 550, IP 560, IP 650, IP 670. REMOTELY CALL ANSWER/END within the DECT wireless 300 feet headset range. COMPARE to the Plantronics wireless headset + APP-51 EHS or the Jabra wireless headset,Sennheiser headset,Leitner headsets + EHS.