Headset Headphones + Noise-canceling Microphone + Quick Disconnect + Voice Tube for Cisco Ip Telephone 7931 7940 7960 7970 7962 7975 7961 7971 7960 M12 M22 and All Series Direct Connect Over The Head Headset, No Additional Applifiers / Adapters Required. Built-in noise-canceling microphone, voice tube, quick disconnect coil cord. Light weight durable headband, soft ear cushions for all day comfort. Headband Style with Single Earpiece for Great Sound Quality in One Ear Adjustable microphone, extendable headband, shirt clip included.