Every single one I bought eventually ended up breaking after a few months. Then one day, right before my workout, I couldnt get them to turn on. Got them for my wife for her birthday! When hanging, the bikes touch and almost over lap. USB DAC use fo the UP4 on a computer is flawless. After some research I came across these gems and they have been perfect. All in all I have developed a rhythm where I probably drink fresh roasted local coffee 50% of the time. The order arrived and I noticed immediately that the logo embroidered on the top of the sleepers was not the same, they seemed wider, shorter in length and the bottom sole was not the same either. They are great for sleep and can be worn when lounging around the house. I can display probably 30 total.