OJO muchos comentarios dicen que no cambia de color, y eso me pasó en un principio, pero después de 3 ciclos de carga aprox, empieza a marcar bien, es decir rojo al momento de cargar y verde al momento de estar completa la carga. Love this it?s perfect I want it in white please I received them on the afternoon of Thursday, March 26, and by Monday March 30 at 8 pm the front of the sole was coming apart. Martens brand. It starts out really good but turns out to be quite a short game. Danke an Amazon für soviel Kulanz, selbst bei solchen Komponenten. I was disappointed that this occurred but this will not cause me to abandon the brand. So basically "all day" on one charge, as far as Im concerned. A lightish box fell on the cord at the USB C connector and broke the connector. Update: these slippers have literally fallen apart.