One point deduction, there is nevertheless for the volume, since the helmet up to 50 km / h is extremely quiet, then it is 120 km / h Extremely fast louder (but not unpleasant). The volume decreases thereafter up of> 200 km / h only slightly. Beautiful would be if it were longer on low noise level, because you often 50 km / h, at least in normal traffic - 120 km / h, as a 120 km / h - 200 km / h.
In my view it is the helmet a strong buy recommendation.