Je n?ai pas besoin de les recharger souvent comme mes anciens ! The VAST majority of orthotic shoes are very expensive. These babies deliver on that front. I want to give an updated review for this product. Have to watch the magnet placement once you figure that out easy, but it took do and redo. It seems sturdy, and nothing slips off. Has battery indicator on app on shows when I?m leaving an item behind. * Note that this is not a noise canceling microphone. The assembled measurements are actually 34 inches across including the elbow joints as you can see in the pictures. This belt arrived quickly and meets all of my needs now, and will become a part of my workout routine and more.