The battery seems to last for a really long time and it charges up fairly quickly from dead so no complaints there. In past I’ve had razo man o war, turtle beach, Corsair vengeance , blue parrot, blue tiger, Bose wireless & wired, & a few others audeze mobius blows everything outta the water. They didnt have this exact slipper but I could tell the quality was what I had been looking for so I came on amazon and got the style I was looking for with confidence Isotoner would bring the quality I was looking for. I do like the look of them and the overall quality. On sound quality: its nothing special. It was good for about a week, then one morning my truck wouldnt turn over at all. I saw they offered a few sizes this one was plenty to clear my 2017 Jeep Wrangler spare. You get so much value for this set and so many bands. Having tried them myself, I understood why. What a pleasure it is to cook and not have spice bottles falling on my head as I try to find something.