Callez RJ9 Telephone Headset with Noise Cancelling Mic & Volume Controls, Mono Phone Headset for Office Phones Compatible with Grandstream GXP2135 2170 Avaya 1608 1616 Panasonic Ooma Landline Phones

["【Wide compatibility】This corded RJ9 office phone headset is ONLY Compatible with Panasonic KX-T Series phones such as: KX-T2260, KX-T2310, KX-T2315, KX-T2365, KX-T2368 KX-T7220 KX-T7230 KX-T7330 KX-T7433 etc; the telephone headset compatible with Grandstream GXP-1200 1400 1405 1450 1610 1615 1620 1625 1628 1630 1760 1780 1782 2000 2010 2020 etc; Avaya 1608, 1616, 9608G, 9611G, 9620, 9621G, 9630, 9640, 9650, 9640G, 9641G, J139, J169, J179, 16CC. SEE MORE COMPATIBLE PHONE MODEL LIST IN DESCRIPTION.","【Not Compatible with Computers and Cell Phones】It is a 4-Pin RJ9 Telephone Headset, NOT FOR CELL PHONES AND COMPUTERS. If your phone is AVAYA, kindly contact us for compatibility checking before purchasing. If you do not find your phone models in the compatibility list above too, please contact us for compatibility guide before purchasing.","【Crystal Clear Calls】Callez RJ call center landline telephone headsets provide a clear listening experience. They feature a built-in high quality noise canceling microphone to effectively reduce background noise and are equipped with sound vibration protection circuitry to protect your hearing. Less noise, clearer voice.","【All-day comfort】This ultralight landline headset for office phone weighs only 1.97oz, making it extremely comfortable to wear. The adjustable headband fits various head shapes, and the high-quality soft leather ear pads enhance all-day comfort. Compete with Plantronics or Jabra heavy-duty Headsets.","【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 PHONE MODELS LISTED IN DESCRIPTION (include but not limited). For Other Phone Brands or Models, pls contact us for Compatibility Guide or Advice."]