Plantronics HW710-POLY is a Polycom IP Phone compatible headset.  HW710-POLY is the "top-of-the-line" Plantronics corded headset that offers super comfort and super audio.  Plantronics HW710-POLY offers top notch performance to office and call center workers. It's built with premium lightweight composite materials along with the super soft leatherette ear cushions taking comfort to a new level.  An telescoping microphone provide the user with a precise position to your mouth so the customer can hear you clearly. Plantronics HW710-POLY ensures crystal-clear, efficient customer communications - with an elegant satin finish and featherweight design.

Certified for Polycom Soundpoint IP phones: 300, 301, 335, 430, 450, 500, 501, 550, 560, 600, 601, 650, 670, CX300, CX500, CX600, CX700, VVX 101, VVX 201 VVX 300, VVX 310, VVX 150, 250, 350, 450, VVX 400, VVX 410, VVX 500, VVX 600, VVX 1500

Key Features:

• Includes a Polycom certified RJ-9 10ft adapter cable - connects directly to the "headset" jack of your Polycom phone.  No additional cable or adapter needed.
• High quality lightweight nylon composite materials provide an ultra-lightweight design
• Reinforced, lightweight headband provides strength and durability
• Retractable telescoping microphone provides precise microphone positioning to the user's mouth
• Noise-canceling microphone means customers never miss a word
• Low-sitting microphone arm stays clear of wearers’ peripheral vision
• Slim, stylish design provides an appealing and subtle visual profile
• Leatherette ear cushions provide hours of comfortable wear
• Luxurious style and comfort with elegant satin finish and featherweight design
• High-frequency wideband support ensures crystal clarity during customer conversations 

For more detail information see Plantronics HW710 datasheet 

Optional accessories for the Plantronics HW710-POLY:

Plantronics Clothing Clip for SupraPlus, Encore Pro Headsets

Plantronics EncorePro HW710, HW291N Leatherette Ear Cushions

Plantronics EncorePro HW710, HW291N Foam Ear Cushions

Plantronics EncorePro Headband Support Pad