Has a flexible microphone boom and reinforced speaker cabinet. The Performance Plus II monaural headset has been designed using stress and scratch resistant materials to survive the most demanding call centre environment. Plus, the lightweight design allows all day comfort. The Performance Plus II Monaural headset also allows the user to find the perfect microphone position. No need for constantly changing the boom position,once in place it will remain in position. Sound quality is dynamic and all callers will be heard loud and clear since the noise canceling microphone picks up the operators voice with precision.