The flexible ear-loop enables you to hear and be heard clearly wherever you are. The noise-cancelling microphone provides improved call clarity in most environments. It features a soft, flexible ear-loop that can be worn on the left or right ear to provide optimal fit and boom placement, enabling you to hear and be heard clearly in most environments. The noise-cancelling microphone provides improved call clarity The Nokia specific M22 -N2 has also acoustic shock protection to protect the users hearing and is hearing aid compatible. Buy Plantronics M22 headset and free your hands today.