I use this wireless headphone as my main IP soft phone device. I tried both the Logitech (over the head) wireless headphone, and the wired Logitech. This ASUS set was cheaper, but in most way's better than the Logitech. (the left speaker of logitech went on the fritz after 3 months) The sound quality and microphone noise cancelling work quite well. There are only two improvements I would suggest.

The mute button is the same as the power button, you sometimes accidently mute the unit when you are trying to power it on... it's a matter of learning how long to hold the button.

The charging cable is a mini USB with two male ends, one plugging into the USB dongle on your computer. Apparently this does not use a standard 5V USB output, so you can't use another cable. This one is too short to use when you are on a call (in case you let the battery go dead). The battery does last a long time, and the unit has auto shutoff, but I still wish the cable was a bit longer. (about 2 feet)