Featuring wideband technology and a noise-canceling microphone, the Plantronics Entera headset delivers strong value and performance to the more cost-conscious contact centers. The Entera is available in a dual-earpiece design that blocks out background noise and a single-earpiece design that lets agents confer with colleagues. The Quick Disconnect feature ensures easy mobility in the work environment. Please be advised that additional cable/adapter required to fit the headset to the phone, depending on the brand and model of the phone.