Unfortunately, immediately broke :-(

The headphones kept not what they verspriechen. The left earpiece fell apart after two repeated use. One could the earpiece while reinstalling, but the sound was on one side then worse.
Since the headphones were a gift that was given away only two weeks later, this is unfortunately only noticed when the return period was almost expired. They can still use, but the sound is limited. I wonder whether it is really keeps to the original Apple headphones? Visually they look like Apple headphones, but they have fallen apart so fast, I was very confused. Unfortunately, a bad buy, even if the elapsed return period was my own fault: - (...