Summary: I have been using these types of headsets since the early 1990s. The KX-TCA93 are the best headsets I have ever used. I have not had any issues during use. Sound is good and I have no problem with them fitting around my ear. I have three telephones and use these headsets on all of them.
Summary: Trying to improve voice quality over speaker phone of my cordless Panasonic phones - this is not the solution. I need hands free phone operation. This was the only head set that did not seem to require strapping over my head.
Summary: Earpiece audio has lots of base to the point that it is hard to understand voice of caller. I have this paired with a Panasonic KX-TGA470 handset - I expected a better pairing of sound clarity.