I stumbled upon this listing by accident, have read the other consumer's opinions on this product and am compelled to write my own review for interested purchasers.I work for a company that sells these cordless headset telephones. They truly are &quot;top of the line&quot;. Before we choose to market a product, we thoroughly investigate and &quot;test drive&quot; prior to adding that to our product line. Plantronics made the grade.We have had terrific customer feedback about them. Having written that and having read the other's reviews, there HAVE been a small number of complaints about this cordless headset's performance. Those primarily being that there has been problems with their particular unit's outgoing volume.We have accepted the returns of those faulty units and either reimbursed, credited or replaced them. As retailers for Plantronics, Plantronics the manufacturer has never given us any problem in immediately replacing the product, no questions asked. They offer incredible customer service and are a pleasure to conduct business with. My guess is that as with any electronic gadget or tool, occasionally few that malfunction pass through the cracks. In my experience however, these are few and far between.The vast majority of our customers who have purchased these cordless headsets are EXTREMELY pleased and satisfied with their units. Too, due to the functionality of an pleasure with this product, many have ordered additional/extra units for individuals whom they didn't at first target for cordless headset use. We haven't had problems with these units wearing out or malfunctioning over time, either.The only improvement which could be made in my opinion is that these should be outfitted for companies with multiple phone lines. I don't know however, if this can be achieved with a cordless. (Client companies of ours with multiple lines DO utilize these headsets, however for use with one line at a time. You cannot put one party on hold while you attend to another nor can you answer a second line.)Cordless headsets aren't for everyone, but for those who may benefit from the convenience of and for the ergonomic benefits of, I wholly recommend Plantronic devices.