Callez RJ9 Yealink Telephone Headset with Noise Cancelling Mic & Volume Controls, Phone Headset for Office Phones Compatible with Yealink T46S T42S T41S T40G T29G T27G T23G T54W VOIP Landline Phones

["【Compatible List for Yealink IP Phones】The Callez RJ9 telephone headsets for office phones compatible with Yealink Desk Phones T19(P)E2 T20P T21(P)E2 T22P T23P T23G T26P T27G T28P T29G T30 T30P T31 T31P T31G T32G T33P T33G T38G T40P T40G T41P T41S T41G T42S T42G T46S T46G T48S T48G T49G T42U T43U T46U T48U T53 T53W T54W T57W T58A VP59 T41S SFB T42S SFB T46S SFB T48S SFB T55A SFB T56A SFB T58A SFB MP56 etc.","【NOT Compatible with Computers and Cell phones】It is a 4-Pin RJ9 Telephone Headset, NOT FOR CELL PHONES AND COMPUTERS. If you do not find your phone models in the compatibility list above, please contact us for compatibility guide before purchasing.","【Superior Sound Quality, Clear Calls】This high-quality RJ9 call center landline headset for yealink phones delivers clear, natural sound for an immersive listening experience. It features a noise-canceling microphone to reduce background noise and Acoustic Shock Protection to safeguard your hearing. Less noise, clearer voice.","【2.97oz Lightweight, Highly Comfortable Headset】Ultra-lightweight telephone wired headset for landline phones with an adjustable headband fits all head sizes. Soft leatherette ear cushions reduce ear pressure for all-day comfort. Perfect for Call Center Service, Conference Calls, Telephone Counseling Services, Insurance, Enterprises, Home, Office & RJ9 jack Landline Deskphones.","【Support & Warranty】Professional Mic Mute / Volume Control built in. 45 days easy returns & 24-month worry-free guarantee for our RJ9 telephone desk phone headsets. ONLY COMPATIBLE WITH SOME SPECIFIC YEALINK PHONE MODELS LISTED IN DESCRIPTION (include but not limited). For Other Phone Brands or Models, pls contact us for Compatibility Guide or Advice."]