I bought this headset thinking that I don't have anything to lose, just a few bucks. I saw plantronics as the brand and I said, what can go wrong.The headset arrived in a generic packaging. Not how a big company would package it, but I have no complaints. As long as the product works, I will use it.I tried making phone calls. I hear the person well. However, everyone has the same complaint to me. They all told me that they are struggling to hear me. I can hear them well. They could not. They said the volume is too low and there is a lot of static. If I remove this thing, and just use the phone without the headset, they all say that they can hear me well. So, I conclude that it is definitely the headset.I tried calling different people on different times of the day. Same result. Everyone struggles to hear me.In the end, I have to throw this away. I rarely write reviews, however, this thing is really so horrible.