COMPATIBILITY: U10 Adapter Bottom Connector Cable included and is Compatible With ALL Cisco 6000 series phones, 7800 Series Phones, 8800, 8900 Series Phones and also Phone models 7940 7940G 7941 7941G 7945 7945G 7960 7960G 7961 7961G 7965 7965G 7970 7970G 7971 7971G 7975 7975G and also compatible with Plantronics M22 and M12 amplifiers. QUICK DISCONNECT FEATURE: Our TruVoice Headset range include a Quick Disconnect Connection, this feature allows customers to detach the headset away from the adapter cable so they can move away from the desk without losing the call. Quick Disconnect headsets also allow the headset user to use the same headset with any other desk phone, Computer, Softphone or Cell Phone by just simply swapping out the bottom cable. The full range of TruVoice adapter cables can be found in our online store. LIGHTWEIGHT: Die Cast Aluminum Frame for Strength & Durability but also stylish and modern in design - Maximized for all day wearing Comfort. COMFORT / SOUND : Headset Includes Super Soft leatherette ear cushions, foam cushions are available if preferred. Our Speakers include acoustic shock protection and HD Audio Sound. NOISE CANCELING: High Quality Noise Canceling microphone with Flexible 270 degree Rotational Microphone Boom. The Microphone will cut out over 90% off all background noise while the user is speaking - Perfect Solution for call center, office or homeworkers.