I bought these to use with my new samsung phone, but people tell me that its hard to make out what Im saying, that it sounds muffled and as if Im on a speaker phone. I had a previous mouse which was the endgame xm1r/xm1 and this mouse puts both of those mouses to shame. But when I used the video scope yesterday, voila, there it was! Seller only issued me a 75% credit. I am a Size 8 and bought my size which fits perfectly. The bottom half of this case snapped on fairly easily and seemed like it would stay snapped on. Mi experiencia ha sido la siguiente, si vas a una velocidad entre 15 y 25 km/h pierdes bastante el sonido del aparato, si por casualidad vas en contra del viento se hace inaudible. They were super cute but still too narrow across the top of the foot. It is great for long walks but strangely, less comfortable when standing for long periods. You can see in my video that Im definitely still finding my balance, but Im basically there.