Summary: It seem they thought about everything except confort. I know that Plantronics is capable of making confortable headsets because they have several on the market. This is not one of them. I have ordered every style that will work with this unit and finally found one that is less uncomfortable than the others. I wouldn't use it all day. In fact, I can only use it about an hour at a time before switching back to speaker phone.

Summary: I purchased the CS-55 along with the HL-10 lifter unit. I found that you could purchase the two as a bundle, but it was cheaper to purchase the lifter and headset separately. The headset works great with my office phone (Nitsuko). Installation and setup was quick and simple. I had the headset working within 10 minutes.

Summary: I purchased this for my wife who has arthritis so she could do other things while talking and not have to cradle a phone in her neck. The idea was good and so far it is working great. She has had some echo when talking, but with a little adjustment of the arm it goes away.

We have this same unit on a multi-line phone at work and could not use the lifter option. Since our phone is a single line at home we are considering buying the lifter. This would allow answering and ending calls w/o going back to the actual phone. Very happy so far.