I am very disappointed in these headphones. It was "delivered on April 6, 2017" and I used them during training (4-5 hours a week). At first they worked, but yesterday 5/17/17 one side of the headphones stopped working. At first I thought my iPhone was broken. But I tested it with 3 other headphones and found that these headphones are not good. Now I can't send them back as I no longer have the original packaging. So the bottom line is, DO NOT buy them.
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