I was happy with the quality of the sound but putting my phone in my pocket would glitch them out. In the end the left one stopped working so I got it refunded. I got a different pair as I thought it might have been something I did. I have had them for 1 week now and once again the left one will not blink blue and only the right earphone works. No matter what I do it won't stay connected. It says "Your phone is connected" then "Your phone is disconnected, pair me" over and over again in the right ear. For this price they should last more than a week. I gave it 2 tries and near of month of use time and I'm really dissapointed. I will be refunding again