I use it for 2 weeks. It is a headphone .... € 30 from there, for sure it's not a headphone pro .... But he defends well! it is comfortable, isolated as much as foam plugs "ear" (ie, the avoisinnant 15/20db). To hear the click, it will, for a sample, it is necessary to bring the volume to hear it, but without self-ears either (at worst it can get earplugs or cotton and more ... .).

The sound is good, with good bass, a very correct definition without either clear or to go to high definition (but € 30 ...). After the fabrication is honest and strong as well, but the max that can have a headset to € 30 (a medium finish and it takes too much fun with the risk of damaging it).
I have not tried many models from the models and therefore very expensive, not too different, because much greater isolation and sensational. But what I was looking (closed headphones battery) is very good.
Quality / price ratio excellent, one of the best headsets (if not the best!) At that price. So I would do this choice (for € 30). Congratulations Roland!