Cant say on duribility yet as have only had them around a month. Seamlessly charging. However, when I received the product, there were manufacturing defects. I purchased it with very low expectation as it is priced inexpensively. For the past month (6 months in) the right ear piece now does that sporadically as well. I love these sandals - the arch support is already really helping my knees and back, while the fact that theyre sandals means my feet can breath c/f the boots Ive been wearing with orthotics in. Was gonna take the clip off it anyway so not an issue but it is advertised as included. And I love the blue colour. My company has ID cards that have to be held up to the readers, before I could just hold my wallet up to the reader and open the door, but with this wallet, that does not work any longer. Since this is my first pair of Crocs, I was not expecting them to be so large in the toe area.