Overall performance well.More than adequate volume on my end, never complaints on the other ends about not being able to hear me.Good rangeGood clarityLightweight, easy to forget I was wearing itGood enough functionalityMy main complaint was that I lost the distinctive ringtones associated with different callers. There was only one ring when I was using this (with a Motorolla V557) so I had to visually check to see who was calling.