JK&reg; CCH-001 Noise Cancelling Call Center Headset Headphone For Polycom SoundPoint, Avaya, Nortel Meridian, Norstar, Samsung, NEC Telephone Noise Canceling Microphone; Pristine Crystal Audio Quality Durable Tangle-free Coiled Quick Disconnect Cord With RJ9 Connector Easily Switch Headset To Either The Left Or The Right Ear Due To 300 Rotatable Microphone Boom Adjustable Low-profile Headband; Soft Leatherette Ear Cushion; Flexible Gooseneck Microphone Arm Compatible With PolyCom, Avaya, NEC, Nortel, Meridian, Norstar, Samsung, ShoreTel, Talkswitch, AASTRA, Altigen (AT510, IP-600, IP705, IP-710), Allworx Telephones