I use it for personal use, for hands free during long calls. This allows me to extend the laundry, typing on the computer or to take care of my baby while talking with my mother 2h ;-) It works great with my cordless phone Siemens Gigaset C450, so I cling to my belt with the dedicated clip. I highly recommend for those who like me do several things simultaneously. I have also used one when I was working, but not this model it, and it was really convenient to take customer calls while typing the minutes of the conference call at the same time (it avoids notes a draft which must then retype).