Wonderful! 30 January

I for 3 days, so my experience is limited.
Product quality is great, it looks like a superior product range.
I used 3 hours battery stand fortunately, the manual is in French and it is clear.
Operation is ultra easy to pair their devices.
I'm not expert, but audio sound suits me perfectly, it is far from certain headphones.
There is a mini LED to monitor the status of the load and the different actions of the helmet.

So for my gym sessions, like the helmet well over his head, no risk of losing even during sudden movement.
(Used for cardio cycling session + treadmill mainly, rarely weightlifting).
It is not used either too much, no earache.
I'm just afraid to grill the helmet with my sweat dripping over ... aha ..

Brief 25 is more than perfect. I highly recommend it.

Supplied USB cable. Simple and nice design, sufficient packaging.