Before that, Sennheiser PC 3 was used, they served for 5 years - the linings were worn out to the plastic. I think these will last no less if the plastic does not fall apart. With its pros: For a skype headset, the sound is very good, if you choose the right position, they will sit well on your head and not interfere. The microphone can be bent, which is a big plus. The microphone itself is quite sensitive: the interlocutor hears well, although the voice is not loud. Some cons: In the hands it seems that the build quality is not very good: when the microphone is bent, its base crackles.