• Bundle of 2 items - Plantronics HW510 EncorePro 510 Headset and Polycom compatible telephone interface cable
• Compatible Polycom Phones: IP 300, 301, 335, 430, 450, 500, 501, 550, 560, 600, 601, 650, 670, CX 300, CX 600 CX 700, VVX 300, VVX 310, VVX 400, VVX 410, VVX 500, VVX 600, VVX 1500
• Quick Disconnect - Allows for easy disconnect from phone without removing headset
• Ultra Noise-Canceling microphone filters out background sound
• Plug-n-Play easy of use, Premium Plantronics Wideband Audio
• HW510 Headset and Cord included