useless without connection cable (sold separately)
The supplier I ordered this from did not mention that this headset can't plug in to a standard phone jack without the special connection cable, which is sold separately. The headset has a funky HDMI-like plug instead of a normal phone cord plug - supposedly to offer quick release so you can walk away from your desk without taking off the headset. Pretty silly for a wired headset; it doesn't work when it's unplugged, so why would anyone walk around with a useless headset and dangling wire instead of just taking it off?? I don't have the connection cable, but the photos online make it look like you can't have both the headset and handset plugged into the phone, so you can't quickly switch between the two. Might be acceptable for sales/service people who spend the entire day on the phone, but not someone who only needs it for the occasional teleconference. Also, I had to look online to figure out how to plug this thing in because the "user guide" is just a series of vague pictures about how to put it on your head, no pictures showing how to plug it into the phone.I'll be returning this.