With this headset it's all about the fit. The microphone is located on the inside of the body of the headset and must be touching your jawbone to work.
Recommend this product?
I have been unable to get this unit to seat properly in my ear. I've tried every combination of ear bud and ear hook without any joy.
When the unit it pressed into the ear the sound quality is very good and the noise cancelling works well. However, I find I'm constantly pressing the unit back into my ear. And, because the connect/disconnect switch is located on the outside of the unit, just opposite of the ear canal, I end up disconnecting the call about one out of every three times I adjust the unit.