Summary: i got these because they look like the ones plantronics used to make. While they are similar, the are not nearly as comfortable. These have foam ear pads instead of the leatherette ones. And the gap between the speaker and the top of the band is too narrow so it kinda pinches the top of my ear.
Summary: Mixed usefulness - the reason being that this is a good product and easy to carry around and has good sound quality when it works / connects well. The problem is that I bought this for my Tablet and the jack has to be perfectly and very sensitively adjusted to get good sound.
Summary: I am using it every day and I am happy for selecting this. Sound and microphone quality is good. It comes with a long wire so that you can comfortably wear and roam around. ;) It can be folded and put in a pouch which comes along with it. So, it is easy to carry.
Summary: So these things are kind of cheaply made. They seem sturdy at first, but after about a week of use the action on the microphone starts to wear and the headset stops gripping your head like a vice.