NOTE:If you can't find your phone model in the compatibility list, you can try our F080 headphone adapter, which is designed to make it easy for users to solve RJ headphone compatibility problems. Search for : B0C9SRXHQW purchase. Peace of mind: With a 45-day money back and 2-year warranty on all Arama headsets, you don't have to worry about the quality of your business headset. Ideal for call centers, home offices, business, teleconferencing, telemarketing. Only available for landline phones with RJ9 headset connector. For other phones, please contact us for compatibility instructions. Built to last: Precision design, quality plastics, durable and advanced. Reinforced headphone cable 6.5 inches, easily provides flexible mobility. Built-in professional microphone mute/volume control for convenience. The new upgraded appearance brings you a different experience. Designed to stay comfortable: Arama landline headsets feature a bendable and rotatable microphone arm that precisely positions the most appropriate call position. Adjustable steel headband fits all head sizes perfectly. Large, soft protein faux leather ear cushions provide all-day comfort. HD Voice for Clear Communication: This RJ9 office phone headset is equipped with a noise-canceling microphone and HD wideband speaker, and combines DSP technology and ASP technology to greatly suppress unwanted background noise and output clear, natural audio, providing a perfect experience. ONLY Compatible with CISCO IP phone models : Cisco IP 66821, 6841, 6851, 6871, 6945, 7821, 7841, 7861, 8811, 8841, 8845, 8851, 8851NR, 8865NR, 7942G, 7945G, 7962G, 7965G, 7975G, 8941, 8945, 8961, 9951, 9971.Pls Check COMPATIBLE PHONE LIST IN DESCRIPTION.