Summary: This device is easy to set up and operate. The headset sound quality is not great. Voices sound a bit boomy, and there is some static or rhythmic clicking (depending on channel) regardless of base unit placement. However, people on the other end of the line report great voice clarity and volume -- I had someone else use the device on a call I made from another phone and indeed, it is crystal clear.
Summary: This is the greatest technical product I have in my home! I have many headsets that people say they can't hear me on, wires get in the way, and I have to carry my phone around with me, but with the CS55H it's like not even having a headset on! I highly recommend it!
Summary: For the record, I hate headsets. But this one passed my distaste tests: comfortable, people can hear me, I can hear them with great dual volume control (on base and headset) and it's wireless so I can walk around and not be held back. The only thing....no 3 way and no ID? Unless I missed this in the manual I can't see who is on call waiting unless I keep my cordless phone on but that decreased the volume potential.