Sometimes cheap just Sch ....!

I'd rather throw my money out the window. From because of crystal clear audio quality - ok, one holding a glass to your ear, so the noise is likely to be compared with the headset. Had my landline phone already several headsets, but this was by far the worst. Therefore, it was after 3 very short tests already in the trash. Moreover, it is far from stable to denote that ear pieces already adopted for the first time when unpacking.