Good sound, quiet microphone, bad mute button

I've used this headset for a couple of years and it has some great features - it is comfortable to wear for extended periods, it's reversible so you can use it on either ear and the listening sound is good.

However, I have had some comments that the microphone is a little quiet - it doesn't cause major issues, but if you work in a noisy environment, that could be a significant factor.

My biggest issue with the headset is the mute button. Unlike other headsets which have an on/off switch for the mute function, this headset requires you to continue to press the mute button. So, when I am in a long teleconference and am trying to multitask, I end up having to find some way to hold the mute down so others cannot hear my typing, etc. Holding it in my teeth has proved the most effective but is clearly sub-optimal!