The Plantronics Voyager 815 is intended for the business market segment. It has noise isolating earbuds to help you focus on the task at hand. Of course, this is not for all business environments because it may be necessary to hear the people around you as well.
Some enthusiasts will also want to pick these up for their noise-reduction technology. There is also a discreet sliding boom with which you can adjust sound quality and make sure that your best voice reaches the other side.