Far from perfection

First, the normal (sound & Co):
-Very Good sound, more open than most headphones (probably designed for the NC, otherwise would block external noise bothersome)
- Construction not uncomfortable
- But not really a headset, as others have written is missing a button to control

Now the noise canceling
- He succeeds very well, sounds to insulate coming from the front, someone can talk to a without having understood a damn thing, sounds from other directions are much quieter, but you can still hear. Frequently noises are moved to higher tonal ranges (is probably due to the technique, slowed reaction)
- The headphones are very bad in wind, they are from by the external microphone which, together with the open structure into a strong wind noise, which is exacerbated by the NC.