The Yealink YHS33 corded headset is an affordable, monaural headset for use in offices and call centers. The YHS33 has a one meter long QD (Quick Disconnect) cord and a RJ9 plug for connecting to the phone. The speaker is covered by a soft ear cushion, and the ergonomic over-the-head design means it will be pleasant to use all day. It?features a 330? pivoting microphone boom to move it out of the way when not speaking or to switch which ear is in use. The speaker produces wideband audio for rich, natural sound. The noise cancelling microphone keeps your conversations clear and professional.