this is my second, the first and I always work the utility of two Benefits: Duration of charged batteries about 10 hours load for 10 hours and stop, allow to save battery time. good performance of the same helmet if a little bulky, but for a good helmet shell ears and sound is normal. I averaged door an hour a day Good sound quality, I listen to the TV or watch movies, for me that's enough, for music lovers, I do not have a musical ear to judge. It is true and it and the main criticism one could make is the positioning of the load ergo based, but we made it.
