Comdio CH203VA6 Corded Call Center Phone Headset Headphones Ear Phone + Volume Mute Control for Polycom SoundPoint IP Phone Series 300 301 430 500 501 550 600 601 650 Lazerbuilt Orchid Packet8 Ip Telephone Direct connect over the head headset headphone, No additional amplifiers or adapters required. Superior quality sound with the flexible adjustable noise cancellation microphone. Most easy setup headset solution, Comfortable ear and mic cushions, Super Lightweight, Super Durable. Mic Mute / Volume Control built in. SEE COMPATIBLE PHONE LIST IN DESCRIPTION, BUY THE ITEM TODAY IF YOU HAVE ONE OF THE PHONE MODELS LISTED BELOW. If you still can't find your phone model, please feel free to send email to us, and our headset experts will check the compatibility.