The headset from Sony is very light and compact and can be easily set up. The sound quality is really great, my interlocutors have reported no problems with the microphone until now.
However, the very tough in-ear ear plugs expresses pretty fast and after a while it hurts right.
Conclusion: Too bad that was saved at the location, technically I am very satisfied and short calls, the device is good super, for longer conversations it is unfortunately useless.