The older generation (RS170) is much better.

The positives of this helmet: the optical input (no more breath now) and very ergonomic control keys. Otherwise the RS170 (old helmet generation) is much better, namely:
-more comfortable
-lighter
-low much more present
-Surround more space
That's the problem: for a new generation headphones, the audio quality is below the older generation. So headset returned to Amazon and I keep my RS170.