Used for a little over two years. Somewhere in a year and a half, the plastic dried out and the headphones broke down on the palms. Although at the time of purchase it seemed that the plastic is quite high quality. I repaired the place of breakage, applied stiffening ribs and filled it with glue. But three days ago, the plastic broke in the area of the right ear. It's a pity, but I won't buy KOSS headphones anymore.
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