Polycom IP PHone Compatible Plantronics Savi 8240 Office Convertible Wireless Headset ( with 3 wearing styles).  This Plantronics Savi 8240 Officewireless package is Polycom phone certified compatible. The Plantronics Savi 8240 Office allows you to switch between your Polycom desk phone, PC (via USB) or Bluetooth cell phone call. This Plantronics Savi 8240 Officewireless headset has a noise-canceling, wideband audio, digital signal processing for optimal sound through the headset. When fully charged, you can talk for 7 hours and up to 350ft away from your desk. Retail Price $459.95

Compatible with these Polycom desk phones 335 430 450 550 560 650 670 VVX 101, VVX 201, VVX 300, 301, VVX 310, 311, VVX 400, 401, VVX 410, 411, VVX 500, 501, VVX 600, 601, VVX 1500, VVX 150, VVX 250, VVX 350, VVX 450

Key Features:

• Includes Polycom EHS remote adapter cable. (for remote answer/end)
• Convertible Wireless Headset - include 3 wearing styles (over the head, over the ear, and behind the neck)
• Roam up to 500 feet range from your PC or your Polycom phone.
• Noise canceling mic
• Easily switch and conference calls between PC, mobile and desk phone calls
• Advanced wideband audio using CAT iq technology
• 7 hours of talk time
• only weight on 21g (about 0.7 oz)
• 1 year warranty