I have used bluetooth headsets for a long time, jabra most of the time, last BT500 failed very soon; so decided to try something new, tried the H605 since it was the same behind the ear style. I did read the other reviews but decided to try it myself - one of the MOST COMFORTABLE loved it but the Mic is way too sensitive generating too much noise for the receiving party making it unusable 95% of the time. Returned it the next day. (not from amazon)