It is perfect, but its duration of life is very low in one month the helmet fails
Cause of the failure poor contact overnight (helmet perfectly maintained) the sound that it was necessary to cut and son in a certain position and even as it is his limit every two seconds must find the headset.
AMAZON is great, I chat with in five minutes it took me ingredient they send you another, I received three days to tell the speed very glad I install and .....
The sound is still very poorly received by the left speaker and microphone is very fragile it up and down while sliding on the old everything was perfect.
Following that my Amazon said it would refund me but I still demand another helmet and tell me it will see.
If you have a problem contacted by chat it are great. I stink see in the comments that people touch directly Beyerdynamic do not do it contacted Amazon it will help you quickly with the end a result that will please you !!
Not forget your helmet is guaranteed 5 years)