I'm prone to using this for calls in noisy environments (airports etc) and the mute function is very important.

When talking with friends using it in noisy environments, there is frquently so little noise that I have to ask if they are in the truck or inside

Anyway, if you're just wanting to talk on the phone without much fuss, even in loud outdoor environments, this thing works quite well for that

It doesn't really stuck into your ear tightly, it sorts of just hangs there, for me this is a pro because it's more comfortable wearing it for long period of time, for someone working in very noisy environment it might be a problem.- Can simultaneously connect to 2 devices.- automatically route call to/from your phone when you put it on your ear, not when you turn it on

EXCEPT the volume is a little low for noisy environments.

Except in the noisiest environments, the range of volume is plenty good and the voice controlled functions work well

However, it has unreliable mic volume/fidelity in silent environments of an isolated office

I usually prefer an earpiece that inserts into the ear, but this one rests against the outside of the ear and I am still able to hear the caller even in noisy environments

If your inside or outside the electronics do a great job of keeping the environment noise under control

In a quiet environment, the volume is mediocre at best.

Some people have complained my voice sounded "compressed", but that is typical when in noisy environments, even with audiophile mics and speakers (I have done studio recording in my time at University), so this does not concern me

I purchased this to use in a loud industrial environment and the volume is not as loud as I had hoped and/or the ear peice does not seal well to block out outside noise

Great in noisy and windy environments to filter out mic noise

This plantronics blue tooth is very nice it works better than any one I