USB headsets are used for VoiP telephone applications otherwise known as softphones or applications such as Microsoft Lync or Skype. These headsets tend to be hard wired and they connect direct to the PC or laptop using a USB connection.
There are various degrees of quality when it comes to USB headset selection. Generally the old rule applies in that the more expensive they are the longer they will last and the better sound quality they will deliver. The majority of USB headsets that Cackle provide come with two year manufacturer warranties.
An alternative to a wired USB headset is a wireless headset which will allow you more maneuverability which is especially helpful if you are regularly away from your desk.