Plantronics, a popular manufacturer of headsets, have come up with another product called Audio 610 USB that marks the difference from the rest by having 2 features that I consider special:

• instead of using the normal 3.5mm headset jack to connect to the computer, much like 85% of the headsets in the market do, it has a USB interface. Of course that the old-school analog ports are also included.
• it is specially made for internet calls, that is the reason why it is mono instead of stereo, and has a microphone.

As always, other features that are normally seen in headsets are part of the deal as well, such as a useful noise-canceling detail for the mic, and ear cushions that can be adjusted thanks to the swivel function.