The usb earphone can be worn on the right or left ear according to your preference. I reached out to the seller and I was issued a new headphone. microphone and hearing on call both fine. But it WILL be better than a condenser mic in a webcam (if only just). Also, you must remove the plastic panel to drill the holes from behind because they are pre-marked by the great guys at Jeep. These grips are very thin and easy to put on. Not happy with the shoddy quality of the rigid plastic used for the over the head "band" in this model, which proves unfit for purpose. They were cushiony, comfortable, and stylish. It’s comfortable enough that I have worn it into church and have to be told by my children that my “jewelry “ isn’t church appropriate! Très confortables.