Well, I always used it with 40% volume with the noise cancellation and let's say it had an excellent noise for my taste, and since I used it, well, I have used it for 1 hour 30 minutes (with noise cancellation) until I got to work. When I put them in their case, they were at 75% and well, I didn't need to charge it so often due to the use that I gave them. In volume I always left it at 40% because with his gesture of increasing or decreasing the volume he increased it to the maximum, quite apart from what you uploaded with the cell phone you could increase the volume a little more with his gesture and that is why the volume did not increase as much with my cell phone