Can go a few days (a few hrs of playback per day) without dying. They look great and they are super comfortable. Very comfortable and stay on well. A size 8 generally fits me perfectly, but my foot sliped all over in these. Smaller than expected but my sister is in love with the show and she absolutely loved this book, especially the pictures of Jughead lol I even tried to buy curtain rod holders, nope. Now everything works great. Its very pretty in person. I have a pair for around the house and at work too. Keep them coming, I will definitely be purchasing more for family members and friends.