The noice cancellation/reduction seems great so far and I’m hoping the battery life will be as promised. Bon alors parlons des points positifs dans un premier temps :La manette est extra. I used the removable stickies on them, just in case I needed to remove them. This is terrible. Overall, for being name brand and more expensive, I had higher expectations for these shoes. Save your time, frustrations and money ! 2 drivers provide the bulk of the sound , while small tweeters enhance the highs. Well the day I put them on proved that Alegria really knows their stuff and I just ordered a pair for a friend. One thing I learned to make this easier to put on, hook the top hooks first that will hold it as you adjust the knobs. That said, the bottom has a hard sole so a quick trip out to the letter box shouldnt ruin them.