Whenever I use this headset, my correspondents report that they have difficulty hearing me, this having been found on two totally different phones. I end each time by removing the headset and speak directly into the phone, which greatly improves the situation .... But actually I do not recommend this headset (for very functional also on all other points, but alas, this one is quite prohibitive).
Now, maybe it would be different for a person whose head is smaller than mine ...
