Summary: These were a gift. They worked wonderfully for about a month, and then I started to get feedback vibration from the right one. If I pressed on the MICROLAB product name, the vibration would stop, so I didn't pursue returning them. Fast forward three more months and they're dead entirely. They light up as if they are connected, and my computer can see them, but there's no sound. We tried to connect to other devices, same issue.