I bought these to block out noise and also allow me to listen to music or audio books around the house. I'm autistic and struggle with certain sounds. These not fulfill the noise reduction requirement I have for any headphones. In fact, they add to my noise distress becauae of the blaringly loud voice in my ears any time the headset powers on or off, and the volume of this voice cannot be adjusted. In addition to that, the headset does not seal over my ears and does not keep it's size setting, meaning I have to re-fit them every time I put them on. The two positives I can offer are the comfort level and the battery life.
However, overall, they are not satisfactory for the price.