I have had these headphones now for a few months. I have had constant problems with them. When I connect them to my computer for meetings, I get sporadic feedback that makes it difficult to hear what is going on. When I connect to my phone they are better but they still randomly cut out (I carry phone around with me, so not a distance to phone thing). Additionally, they are not in sinc with each other. They do not charge the same, so one will run out before the other and the other day I charged them in their case using my computer for the whole day and one ran out of charge after about 1 hour. These headphones are terrible, I do NOT recommend, I will be throwing them away as soon as I can get some ones that work!