Plantronics P91N-U10P Polaris Encore Monaural Headset offers top-of-the-line sound quality in a headband style. Lightweight design ensures all-day comfort. Monaural Encore headsets have one ear pad; easy switch from right to left ear. Plantronics noise-canceling microphone filters out background sounds; ideal for noisy office environments. Plantronics Quick Disconnect acts as on-hold function, allowing you to walk away from your phone while wearing your headset. Comes complete with Polaris cable (Quick Disconnect to modular plug) that connects headset directly to your Polaris-compatible phone.