Phones Headset RJ9 with Pro Noise Canceling Mic and Mute Switch Wired Office Headset Compatible with Polycom Mitel Plantronic Avaya Landline Phones

**********Compatible with following
Polycom phone models: VVX201, VVX300/310/311, VVX400/410/411, VVX500, VVX 600/601, SoundPoint 300 301 335 430 450 500 (rev. E or later) 501 550 600 601 650 670 And other
Telephone Models: Mitel 5312 5320 AVAYA 1408 1416 5410 ShoreTel 230 420 480 Aastra Allworx Adtran Alcatel Lucent AltiGen Comdial Digium Plantronics MiVoice. For other phones, pls contact us for Compatibility Guide or Advice. *****Ultra durable headset with reliable structure, build for last. Six levels of adjustability and a lightweight design ensure all day comfortable wearing. You can even pull or bend the headband for personal optimal fit. *****HD Voice for
Clear Communication: Wideband Sound telephone headset enables natural listening experience, noise canceling microphone provides greater focus and concentration by blocking background noise, plus acoustic Shock Protection to protect your hearing. Less noise, Clearer voice. *****Monaural headset for those who prefer to leave one