After charging overnight, I get about 4 to 5 hours of continuous listening until the rechargeable battery runs down. At first, the shoes are comfortable and springy. If youre not a careful person, itll take one bad fall. To big but overall they are ok. I still plan on keeping them to wear for short periods of time because they are cute shoes and seem like they will last for a long time. Multi display layouts for time/steps/heart, some cheesy. They say there is no right foot or left foot but, in reality I find that they really do have them; there is a subtle difference. Not bass you can feel, of course, but very low frequencies that can surprise for such a small sound source, if not downright amaze, and mixes well enough with highs and mids. They feel safe on my feet and are very warm.