Well only had these things a couple of months and my opinion. One has stopped working altogether replaced the
battery but still no joy think it’s goosed to be honest they look and feel really cheaply made if I could have seen and felt them before I bought them I think I wouldn’t have bothered. think I bummed them up on the idea being a good one and not the experience of owning them for a while so just my opinion They do work but the conditions have to be perfect and are a bit fiddly to get a connection.